Week 2 Air standard Cycle

Aim: Check and correct all geometrical flaws for the provided tesla cybertruck model, and then assign suitable PIDs and then requried Target length and element for the mesh Quality criterion.   After using the topo tool in the geometry, we can see that all single cons have been transformed to double cons. Thus,…

Aim/Objective : To do surface wrap over assembled parts (engine,transmission and gear box) Target length for Wrap = 3mm Procedure : First the model is loaded on to ANSA Unwanted surface are deleted without damaging the outer shape of the geometries. Single cons are resolved mainly here as it would affect negetively on…

CFD MESHING FOR BMW CAR:- Objective- Do topo cleanup for BMW car Do 2D meshing, check quality criterias Use hidden mode to check failed meshes on quality criteria Use reconstruct option to  view and  clear failed meshes Do 3D Meshing for car Create a wind tunnel , either in 2D or 3D mesh depending on capacity of your system…

AIM: For the given model, to check for the geometrical errors to make appropriate volumes, create and assign PIDs. To perform surface mesh with the given target lengths as per PIDs. Blade stage-1 = 1 mm Blade stage-2 = 1 mm Impeller = 2 mm Shaft rotor = 1 mm Turbo casing = 5 mm Compressor casing = 5 mm Inlet casing cover…

Aim:                To study surface meshing on given geometry, Making three different models with 3 different target lengths. Geometry: The model provided has many flaws which are to be corrected before meshing Given Geometry As we can see there are…

Data analysis   AIM -   Write a script that does data analysis.   Objectives -  To ensure  1. Data visualizer 2. Compatability check 3. Basic performance calculation   Theory   This code takes takes the data from a user specified CONVERGE format file.…

AIM:  To write the Python program to fit a linear and cubic polynomial for the Cp data. THEORY :  Curve Fitting :                      Curve fitting is the process of constructing a curve, or mathematical function, that has the best fit to a series of…

Simple Pendulum Aim:             Solving a second order ordinary differential equation of simple pendulum. Objective: To convert second order ordinary differential equation to 1st order ordinary differential equation. To create the function using python in-built…

Aim: Solve otto cycle problem with python programing. Objective: 1. Your code should create a PV diagram 2. You should output the thermal efficiency of the engine. Theory:  The Otto cycle is the ideal cycle for spark-ignition reciprocating engines. In most spark-ignition engines, the piston executes four complete…

Aim:  To perform a parametric study on Gate valve. Objective: Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot the graph. Discuss the results of the mass flow rate and flow coefficient.  Gate valve:  A gate valve controls…

AIM:  to simulate the flow through a cyclone separator and showing the results for the different particle size and for the different velocities. we have to run the simulation for the six cases   1).set the velocity constant to 3 m/s and do simulation for the varying size of the particle. 2).set the…

AIM: Perform a steady-state conjugate heat transfer analysis on a model of a graphics card.  OBJECTIVE: Simulate by varying the velocity from 1m/sec to 5m/sec for at least 3 velocities and discuss the results. Find out the maximum temperature and heat transfer coefficient attained by the processor. Prove that…

Objective:  What are some practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves? In your own words, explain how these mathematical models have been adapted for CFD calculations. Perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh…

Objectives: Give a brief description of why and where a CHT analysis is used. Maintain the y+ value according to the turbulence model and justify the results.  Calculate the wall/surface heat transfer coefficient on the internal solid surface & show the velocity & temperature contours in appropriate areas.…

1.INTRODUCTION The Ahmed body is simplified car body used in automotive field to study the impact of the flow pattern on the drag. The external aerodynamics of the car defines many major traits of an automobile like stability, comfort and fuel consumption at high speeds. The flow around the vehicle is characterized by…

Aim:  Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.  Objective: 1.To Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number to 10,100,1000,10000 & 100000. (Run with steady solver) 2.Simulate the flow with the steady and unsteady case and calculate…

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,…

Aim: derive both the conservation and non-conservation forms of the governing equations and sovle them using the MacCormack's technique also determine the steady-state temperature distribution for the flow-field variables and investigate the difference between the two forms of governing equations by comparing…

Aim: Steady state analysis & Transient State Analysis Solve the 2D heat conduction equation by using the point iterative techniques that were taught in the class. The Boundary conditions for the problem are as follows; Top Boundary = 600 K Bottom Boundary = 900 K Left Boundary = 400 K Right Boundary = 800 K You…

Aim: Derive the following 4th order approximations of the second-order derivative.  1. Central difference 2. Skewed right-sided difference 3. Skewed left-sided difference Solution:  CENTRAL DIFFERENCING SCHEME: NO OF NODES: The number of nodes = p+q-1 Where, p is order of derivative.      …

Aim: To select roll bar and prepare an understeer budget sheet for a light weight sporty vehicle. Inputs:   Target And Constraints:  Formula Used: 1. Roll Bar: a. The CG distance from front and rear is calculated using the weight distribution. Front axle to CG distance(a) = (Msr*WB)/m Rear axle…

Problem:  The following table contains information about two vehicles  1. Calculate the following parameters for both using formulas   1. Undamped natural frequency (Hz)    2. Damping ratio    3. Damped frequency (Hz)    4. Rise time  2. Plot the unit step response of the…

Problem:  A car has a weight of 1900 lb front axle and 1552 lb on the rear with a wheelbase of 100.6 inches. The tires have the following cornering stiffness values Determine the following: (2 points each except for the first question)  1. Ackermann steer angles for 500, 200 and 50 ft radius (3 points) 2.…

Answer: Given Data: Formula used: 1. Roll moment (ft-lb/g): sprung mass * sprung mass roll moment arm * (`pi/180`) 2. Roll gradient (deg/g):  sprung mass * sprung mass roll moment arm / [Front roll stiffness + Rear roll stiffness -  sprung mass * sprung mass roll moment arm * (`pi/180`)] 3.  Load transfer…

Answer: Going through the help provided, We have all the formulas just we substitute proper values and get the answer. For this we have made a Excel sheet for calculation purpose as shown below. 1. Calculate the following parameters(12 points) Front end deflection under load = 0.6315 in Rear end deflection under load =…

Project Deliverables: 1. Perform hardpoint tuning to achieve the target acceleration and braking pitch gradient for double wishbone suspension at the front and Multilink suspension at rear. 2. Adams plots showing effect of tuning. 3. Completed Excel sheet. Project targets and constraints:   Introduction: Pitching is the…

Aim: Perform appropriate simulations and find out the following compliance related parameters (on-center gradients) Models : Rear Multilink (created from Acar library using the multilink template) Part 1: Baseline analysis Brake steer (deg/m). State whether the suspension toes in or out under braking. Traction steer…

Steps:  The double wishbone suspension system is loaded. As shown below, The initial hard points are as shown below, With this set of hard points we run parallel wheel travel simulation and name it as 'Default_hardpoints' with 500 steps and 100 mm in jounce and rebounce. Click on apply and ok. The simulation will…

Aim: Run any simulation and try out the following:    1.Graph styles, titles, labels.    2.Plot configuration files – export and import.    3.Export numeric data.    4.Import numeric data and plot.    5.Animations, cameras and video export. Answer: we will perform…

Given: Total Weight = 1900 Kg F/R distribution = 55% Unsprung Mass Front = 90 Kg Unsprung Mass Rear = 60 Kg 1.A. Sprung mass critical damping for Front: Ks = 20 N/mm Wheel rate(Kw) = Ks * (motion ratio)^2                         = 20*0.97^2      …

1.Lets first find out the time lag due to the Speed: Wheelbase = 2.7 mm Speed = 26.82 mps Time lag due to speed(t) = Wheelbase/Speed                                  = 2.7/26.82                  …

Aim:  1.Why is the wheel rate usually different from the spring rate? Ans: Wheel rate is a measure of the effective stiffness of the suspension system measured at the wheel centre. Spring's rate is the amount of weight required to compress itself a single inch. Wheel rate is the product of spring rate…

Aim:  This challenge tests your understanding of front and side view kingpin geometry. Do these calculations manually (not using a suspension tool like Adams or MotionSolve) to enhance your understanding It is advisable to do this exercise in an excel sheet so that you can change hardpoints and study the effects.…

Aim: This challenge tests your understanding of roll center construction. Do these calculations manually (not using a suspension tool like Adams or MotionSolve) to enhance your understanding It is advisable to do this exercise in an excel sheet so that you can change hardpoints and study the effects Also, draw a rough…

Aim: For a 10 cell series lithium ion battery model, simulate the thermal effects and compare life cycle performance at various temperatures, charge & discharge rates using MATLAB. Theory: The lithium ion battery are the most commonly used battery in different hybrid and electric vehicle. We also know that the…

Aim: Battery pack capacity: 18 kWh Cell: ANR26650M1-B  Prepare a detailed battery pack drawing along with its enclosure. State your assumptions. Solution: Before designing the battery pack lets us know about battery pack. Cell: A cell is a single unit device which converts chemical energy into electric energy.…

    Aim:  Simulate the 3 test cases from harness dashboard and write a detailed report on the results. What is coulomb counting? Refer to the above model and explain how BMS implements coulomb counting for SOC estimation ? Solution: We need to download the model using the link provided in Question. We select…

Aim: 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.Give your detailed explanation on it. Theory: Let us first know about lithium ion battery. A lithium-ion battery or Li-ion battery is…

Aim: Create a MATLAB model of electric car which uses a battery and a DC motor. Choose suitable blocks from Powertrain block set. Prepare a report about your model including following:        1. System level configurations        2. Model parameters        3.…

Aim:  Search and list out the total weight of various types of aircrafts.  Theory:  Aircraft Gross Weight: The aircraft gross weight (also known as the all-up weight and abbreviated AUW) is the total aircraft weight at any moment during the flight or ground operation. An aircraft's…

Aim: For a defined driving cycle, calculate the energy required for braking. Theory: A driving cycle is a series of data points representing the speed of a vehicle versus time. Driving cycles are produced by different countries and organizations to assess the performance of vehicles in various ways, as for…

Aim: A. Explain a MATLAB demo model named ‘Speed control of a DC motor using BJT H-bridge’.     B. Comment on the armature current shoot-up from the scope results.     C. Refer to the help section of ‘The Four-Quadrant Chopper DC Drive (DC7) block’. Compare it with the H-bridge…

Aim: Which types of power converter circuits are employed in electric and hybrid electric vehicle?   Theory: The most commonly used power converters used in EV and HEV are DC/DC converter and DC/AC converter. In reference (Schaltz & Rasmussen, 2008), 10 cases of combining the fuel cell with the battery,…

Aim: What is the difference between mapped and dynamic model of engine, motor and generator? How can you change model type? Theory: Powertrain Blockset: Powertrain Blockset provides fully assembled reference application models of automotive powertrains, including gasoline, diesel, hybrid, and electric systems.…

Aim: Use ADVISOR tool and simulate Objective:  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. 2.   In the above case, try changing the battery capacity and repeat the…

Aim: Make Adaptive Cruise Control (ACC) model. Objective:  Developing Adaptive Cruise Control feature as per the Requirement Document using MATLAB Simulink. Follow all the MBD related processes: Requirement Tagging & Traceability, SLDD creation, Configuration Parameter changes, Model Advisor check & Code…

Aim : Vehicle Direction Determination. Objective of Mini Project: Development of MATLAB Simulink model as per requirement. Tag the requirements to the simulink model; tagging requirement 1 & requirement 2 to their corresponding subsystems is fine. MBD compliant changes, Data Dictionary creation & code generation…

Aim:  Create a Rankine Cycle Simulator using MATLAB Calculate the state points of the Rankine Cycle based on user inputs.  Extracting steam and water properties from given file. Plot the corresponding T-s and h-s plots for the calculated state points. Rankine cycle: The Rankine cycle is the process widely…

Aim:Write a matlab code to find thermodynamic properties of given species Objective:  Write a code that read NASA thermodynamic file. Write a function that extracts the 14 co-efficients. Calculate thermodynamic properties using the coefficients. Calculate molecular weight of given species. Definations: Specific Heat:…

Aim:  Write a code in MATLAB to optimise the stalagmite function and find the global maxima of the function. Clearly expalin the concept of genetic algorithm in your own words and also explain the syntax for ga in MATLAB in your report. Make sure that your code gives the same output, even if it…

 Aim : Write a program which can solve ordinary differential equation shown  Figure 1 : Plot a graph between displacement and velocity with respect to time.  Figure 2 : Make a video to see motion of simple pendulum. Variables : Here is the list of complete variable that is to be used further in this program.…