Week 3 - External flow simulation over an Ahmed body.

Model – Cylinder geometry - This is a simple model representing a CI engine with direct injection as mode of fuel inlet. Engine has single cylinder. Intake system taking air at ambient condition and at the same condition exhaust system is expelling air, means there is no turbocharger. Case setup – In case one…

Fast Running Model (FRM) -  FRMs execute much more rapidly than the typical detailed GT-POWER engine model, and are ideal for integrating with other vehicle systems where an accurate and predictive engine plant model is desired and where computational speed is critical.  FRMs adapt to changing conditions like…

Turbocharger – A turbocharger is a machine which, compress the air entering an engine, increasing the amount of air that enters and thereby increasing the power output. The turbocharger is composed of two main parts - the compressor, which compresses the air in the intake and the turbine, which draws the…

SI vs CI S.No./Engine type                                SI engine                                       …

PFI Engine queries 1. Compression ratio – it is the ratio between the total volume of the combustion chamber which is left when the piston is at its bottom dead centre and the volume left inside the combustion chamber when the piston moves to its top dead centre. compression ratio determines the thermal…

SI Engine – Spark ignition (SI) engine is a type of engine in which the combustion takes place by the spark generated by the spark plug. It uses petrol as fuel and works on Otto cycle. In the spark ignition engine, the air-fuel mixture is inserted into the cylinder with help of carburetor. The compression…

GT-SUITE is a comprehensive set of simulation tools for engine and vehicle systems. It offers engineers functionalities ranging from fast concept design to detailed system or sub-system analyses, design optimization, and root cause investigation. The GT-SUITE simulation consists of a set of simulation modelling libraries…

1. Title – Emission characterization on a CAT3410 engine. 2. Objective – To import the CAD model of engine in converge Software and check for errors. To make sector for both omega piston and w piston, with make engine sector surface. To solve the case using suitable solver and convert the result for Paraview…

1. Title – Simulation of Flow through Pipe OpenFoam. 2. Objective – To automate blockmeshdict file using MATLAB which contains pipe dimension and boundaries. To setup the initial and boundary conditions for simulation and run with a suitable solver. Create pressure and velocity contours and profiles using paraview…

1. Title – PFI Engine Simulation. 2. Objective – To import the CAD model of engine in converge Software and check for errors. To set up the case with proper grid size, material and boundary conditions. To solve the case using suitable solver and convert the result for Paraview software. To import output files…

1. Title – Simulation of Flow through Pipe OpenFoam. 2. Objective – To automate blockmeshdict file using MATLAB which contains pipe dimension and boundaries. To setup the initial and boundary conditions for simulation and run with a suitable solver. Create pressure and velocity contours and profiles using paraview…

The process of obtaining the computational solution consists of two stages. The first stage involves the conversion of the partial differential equations and auxiliary (boundary and initial) conditions into a system of discrete algebraic equations. This first stage is commonly known as the discretization stage. All numerical…

1. Title – Simulation of Backward Facing Step in OpenFoam. 2. Objective – To create backward facing step using existing blockmesh dictionary with different grading factor. To setup the initial and boundary conditions for simulation and run with a suitable solver. Create pressure and velocity contours and profiles…

1. Title - Surface preparation and Boundary Flagging. 2. Objective – Import the CAD model of IC engine into converge and run diagnosis. Look for errors and solve them, without compromising actual model. Setup the case for no hydrodynamic simulation, solve it and create animation in Paraview to see valve and piston…

the Navier-Stokes equations are equations, that describe the three-dimensional motion of viscous fluid substances.The Navier-Stokes equations consists of a time-dependent continuity equation for conservation of mass, three time-dependent conservation of momentum equations and a time-dependent conservation of energy equation.…

Taylor series formula is a representation of any function as an infinite sum of terms. These terms are calculated from the values of function’s derivatives at a single point. The derivative of a function f at the point x is defined as the limit of a difference quotient- We can say the difference quotient is an approximation…

1. Title – Shock Tube Simulation. 2. Objective – To create the tube in converge Software. To set up the case with proper grid size, material and boundary conditions. To solve the case using Cygwin terminal and convert the result for Paraview software. To import output files in Paraview and generate required…

2D Heat Conduction Equation – this the simple equation which represent heat propagation in two dimensions. Steady state 2D heat conduction equation can be written as follows, with assuming no internal heat generation – Transient state 2D heat conduction equation can be given as follows – In this study…

1. Title – Conjugate Heat Transfer Simulation. 2. Objective – To create the hollow cylinder in converge Software. To set up the case with proper grid size, material and boundary conditions. To solve the case using Cygwin terminal and convert the result for Paraview software. To import output files in Paraview…

1. Title – Steady state simulation of flow over a throttle body. 2. Objective – To create the CAD model in which shock wave can be created, in converge Software. To set up the case with proper grid size, material and boundary conditions. To solve the case using Cygwin terminal and convert the result for Paraview…

1. Title – Transient state simulation of flow over a throttle body. 2. Objective – To create the model of a throttle body in converge Software. To set up the case with proper grid size, material and boundary conditions. To solve the case using Cygwin terminal and convert the result for Paraview software. To…

1. Title – Steady state simulation of flow over a throttle body. 2. Objective – To create the model of a throttle body in converge Software. To set up the case with proper grid size, material and boundary conditions. To solve the case using Cygwin terminal and convert the result for Paraview software. To import…

1. Title – Flow over a backward facing step. 2. Objective – To create the model of backward step in converge Software. To set up the case with proper grid size, material and boundary conditions. To solve the case using Cygwin terminal and convert the result for Paraview software. To import output files in Paraview…

1. Title – Channel Flow Simulation 2. Objective – To create the model of channel in converge Software. To set up the case with proper grid size, material and boundary conditions. To solver the case using Cygwin terminal and convert the result for Paraview software. To import output files in Paraview and generate…

1. Title – Simulating combustion of natural gas. 2. Objective – To import the combustor 3D model in Spaceclaim, convert it into 2D ad save it as new model. To mesh the combustor model with suitable mesh setting. To setup the solver setting with proper solver model and its parameter. To generate plots of mass…

1. Title –Simulating Cyclone separator with Discrete Phase Modelling. 2. Objective – To Import the CAD model of cyclone separator in Spaceclaim and generate flow volume. To mesh the model with suitable sizes in Ansys mechanical. To set solver with suitable model, boundary conditions and solve. To calculate…

1. Title – CHT analysis on graphic card. 2. Objective – To Import graphic card CAD model in Spaceclaim and clean up the geometry To mesh it in Ansys Mechanical with suitable element size and quality. To apply proper boundary conditions, assign material and solve it with proper model. To generate contours of…

1. Title – CHT Analysis on Exhaust Port Manifold. 2. Objective – To import CAD model of exhaust port and extract volume for fluid flow. To mesh model with suitable size and inflation layers. To solve conjugate heat transfer with suitable solver and boundary conditions. To generate contour plots for static temperature,…

1. Title – Rayleigh Taylor Instability 2. Objective – To design geometry (Column type), which holds the two fluid. To mesh designed geometry with different sizes. To set suitable solver model and generate animation of volume fraction. 3. Theory – The Rayleigh-Taylor instability occurs at the plane of…

1. Title – Simulation of Airflow around Ahmed Body 2. Objective – To make 3d model of Ahmed Body and mesh it. To solve the model and calculate coefficient of drag and coefficient of lift. To generate pressure, velocity contour and vector plot. To perform grid independency test. 3. Introduction – Computational…

1. Title – Mixing Tee Effectiveness 2. Objective – To clean the geometry and mesh it in pre-processing. To solve the model with best solver in Ansys solver. To generate contour and line plots and analyse it in postprocessor. 3. Introduction – Computational fluid dynamics is a branch of fluid mechanics,…

1. Title – Flow over cylinder 2. Objective – To Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.  To Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number to 10,100,1000,10000 & 100000. To Discuss the effect of Reynolds…

Study - For the given assembly, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned for mid surfaces. Use tetra elements to model non-uniform thickness components. Also use connections to connect the component. Common Note: Use…

Study -  For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned. Write a detailed report on your meshing process and also mention which method you used to extract the mid-surface along with the reason.…

Study -  Practice all the Morphing techniques that were shown in the video for the given component. Write a report on Morphing and its use cases in various industries. 1. Title – Morphing In ANSA 2. Objective – To understand about morphing technique and its uses To reshape given CAD model and create some…

1. Title – Connections in Rear Door of a Car. 2. Objective – To make bolt and seam weld connection between parts of front door. To make C busing between door and glass. 3. Procedure – ANSA is an advanced multidisciplinary CAE pre-processing tool that provides all the necessary functionality for full-model…

Time Taken -  Model 1 - 2 hour 47 Minute Model 2 - 2 hour

Study - For the given component, check for the geometrical errors and mesh with the given element Quality criteria. Use tetra elements to model the component and there should not and kinks and dips on the surface of the component. Write a detailed report on your meshing process. S.No  Quality Criteria  Value  1 Target/Average…

Study -  For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned.  Write a detailed report on your meshing process and also mention which method you used to extract the mid-surface along with the reason.…

Study -  For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned. Write a detailed report on your meshing process and also mention which method you used to extract the mid-surface along with the reason.…

Study – Prepare a report summarizing thermal management techniques for electric car battery pack. Electric vehicle technology is a promising source which helps us to reduce pollution specially if source of electrical energy is a renewable source. Hybrid electric vehicle technology reduces petroleum consumption…

Study – How weakest cell limits the usable capacity of the battery pack? What is the solution? Batteries of HEVs and EVs are made of large number of cells, which are connected in series and parallel connection to achieve high voltages. Greater the battery, greater will be the chances of failure, because all…

Study – What is coulomb counting? How BMS implements coulomb counting for SOC estimation? Coulomb counting is method to estimate state of charge of a battery. State is one of the most important parameter of battery and it is defined as the ratio of current capacity and nominal capacity. There are many methods…

Study – Make a MATLAB model of fuel cell powered electric vehicle and comment on results. Fuel cell is a device which converts chemical energy into electrical energy with some by products. Fuel cell provides high specific energy that can be used for long range, but they are poor in specific power so they cannot…

Study – Simulate generic battery model charge discharge using UDDS data. Drive cycle is data set of velocity versus time. In this particular we are using Urban Dynamometer Driving Schedule (UDDS) or Federal Test Procedure (FTP72). It has 1369 seconds for different velocity points. Driving cycle are produced…

Study - Prepare a table which includes materials & chemical reactions occurring at the anode and cathode of LCO, LMO, NCA, NMC, LFP and LTO type of lithium ion cells. Li-ion battery is a rechargeable battery, which uses lithium ions as key component.Li-ion batteries can be classified according to their different cathode…

1.Title – Modelling and Rendering of Audi Q3 car. 2.Objective – Design and modelling of components of car, using sketch tools and 3D modelling features of Solidworks. Assembly of car using Solidworks assembly tool. Rendering images of car in Photoview360 and Solidworks visualization with different environments…

1. Title – MATLAB model of an electric car. 2. Objective – To design MATLAB of an electric car with Li-ion battery and DC motor. Perform simulation to find status of output velocity with respect to reference velocity. To plot for different values of parameter and analyse the plot. 3. Introduction – Electric…

1.Radar Mast  Isometric view Front view Left side view Right side view Feature tree  2. Yacht Assembly  1.Title – Modelling and Rendering of Yacht. 2.Objective – Design and modelling of components of Yacht, using sketch tools and 3D modelling features of Solidworks. Assembly of Yacht using…

Study 1 - Search and list out the total weight of various types of aircrafts.  Aircraft is a machine, which is capable of flying by gaining support from air. Generally, aircraft classified into two categories – lighter than air, heavier than air. According to international civil aviation organisation aircraft…

Study 1 - For a defined driving cycle, calculate the energy required for braking. Driving cycle is a series of data point representing the speed of a vehicle versus time. It has acceleration and deacceleration points means where velocity increases and decreases with respect to time. for deacceleration points braking…

1.Title – Modelling and Rendering of American Chopper. 2.Objective – Design and modelling of components of American chopper in Solidworks, using sketch tools and 3D modelling features. Assembly of American chopper using Solidworks assembly tool. Rendering images of American chopper using Photoview360 and Solidworks…

Study 1 - Run MATLAB demo ‘Speed control of a DC motor using BJT H-bridge’. Modify the model such that armature current doesn’t shoot up when motor changes direction from forward to reverse.  Model description – Model has a DC motor, which is controlled by four IGBTs arranged in H shape…

Study 1 - Which types of power converter circuits are employed in electric and hybrid electric vehicle?  Power Converters – These are the components, which changes electric energy from one form to another form and the voltage from high to low and vice versa. Converter uses non linear components such as…

Study 1 - What is the difference between mapped and dynamic model of engine, motor and generator? How can you change model type?  Mapped model – These types of model uses lookup tables to characterize performance of a system. Look up table contains typical values of a variable with respect to another variable.…

Study 1 - For EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel for 45 km with FTP drive cycle? Conclude your observations. We need to find vehicle can travel 45km or not, with EV drivetrain configuration and with default battery capacity. We are using ADVISOR (Advance…

Aim – Create a rankine cycle simulator and plot T-s and h-s diagram. Theory – Rankine cycle is process, used in power plant to produce mechanical energy from heat. It usually uses water as working fluid. In this cycle a fuel is used externally to convert water into steam which expands through turbine and…

Aim - write a matlab programme to optimise the stalagmite function and find the global maxima of the function. Theory- Genetic algorithm – it is a method of solving optimization problem both constrained and unconstrained.it is based on the natural selection proposed by john holland based on darwin’s theory…

Aim – Write a program to simulate pendulum motion. Theory - A simple pendulum consists of mass m hanging from a string length L and fixed at a pivot point. The differencial equation which represents the motion of a simple pendulum is- `(d^2θ)/(dt^2) + b/m(dθ)/dt +g/L sinθ = 0` m = Mass…

Aim – Write a function that extracts the 14 co-efficient and calculates the enthalpy, entropy and specific heats for all the species given in data file. Calculate the molecular weight of each species and display it in the command window. Plot the Cp, Enthalpy and Entropy for the local temperature range (low…