Week 2 - Flow over a Cylinder.

    Now we will go for surface meshing  Lets give universal quality criteria,lets goto quality parameter,Just enabled skewness,min length,max length,Now gives values,Here skewness=0.5,min length=0.1mm,max length=6mm because here the minimum target length = 2mm and maximum target length=4mm   STEP 2- …

Aim : For the given models, check for the geometrical errors and delete surfaces which are unwanted for Surface wrap as shown in the videos. After clearing geometry, Merge all 3 models and perform surface wrap. Target length for Wrap = 3 mm Procedure : First the model is loaded on to ANSA Unwanted surface are deleted without…

Aim : For the given model, check and solve all geometrical errors on half portion and Assign appropriate PIDs. Perform meshing with the given Target length and element Quality criteria. After meshing the half model, Do symmetry to the other side. Target lengths for the different parts of a model are as follow: Body - 3…

Aim : For the given model, check for the geometrical errors to make appropriate volumes. Create and assign PIDs as shown in the video. 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…

  Aim : For the given model, check for the geometrical errors and perform Topology cleanup accordingly. Set three different target lengths as three different cases and mesh the model.  Target length = 1mm, 3 mm and 5 mm (i.e. 3 cases) Element type = Tria Apply any one target length from the above at a time for…

Aim : Perform a steady-state conjugate heat transfer analysis on a model of a graphics card. You can use appropriate materials of your choice for the simulation. Make sure to properly define the correct solid and fluid zones. Refer the video for further clarification and the model is provided below the video. Run the simulation…

Aim : Part I Perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species’ in the simulation using line probes at different locations of the combustor as shown in Fig. You need to plot for CO2, H2O, CH4, N2, O2, NOx emissions & Soot formation. …

CHALLENGE FOR GATE VALVE SIMULATION: Aim : For this challenge, you will have to perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%.  Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot…

Aim:- To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   Objective:- To write a few words about any four empirical models used to calculate the cyclone separator efficiency.  To perform an analysis on a given cyclone separator model by varying the particle…

Aim : Rayleigh Taylor Instability   Objectives : 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…

Aim : CHT Analysis on Exhaust port 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…

The geometry which is provided with the challenge needs a modification which you should be able to do at this stage of a course. You need to use the 'split body' command in SpaceClaim to perform the operation and then you can use the symmetry boundary condition in fluent to perform the simulation.  Aim : Run the simulation…

Aim : Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street.    PART-I Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.  PART-II Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number to 10,100,1000,10000…

Aim :  Your job is to set up steady-state simulations to compare the mixing effectiveness when hot inlet temperature is 360C & the Cold inlet is at 190C.  Use the k-epsilon and k-omega SST model for the first case and based on your judgment use the more suitable model for further cases. Giving the reason…

Objective : In this challenge you will simulate the same problem as in week 1 but by applying Symmetry Boundary Condition. You will do the simulation for the below mentioned angles using both symmetry and wedge boundary conditions and validate them with HP equations like you did in week 11 challenge.   Angles to test:…

In this challenge, we have to  simulate an axi-symmetric flow by applying the wedge boundary condition. The flow is laminar and flows through a constant cross-section pipe at an inlet Reynold's number of 2100. You can do a transient or steady state simulation and you will validate your results with the Hagen- Poiseuille's…

Objective : you are going to simulate an incompressible-laminar-viscous flow through the backward facing step geometry. You should perform a transient simulation. The solver can be chosen based on the described physics of the flow. You need to explain the entire simulation procedure (how you set up the case). You should…

Objective: To study and understand                     1. The difference between FDM and FVM.                     2. Interpolation schemes in FVM                 …

Objective : In this challenge you are going to simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle. You will derive both the conservation and non-conservation forms of the governing equations and sovle them using the MacCormack's technique. You need to determine the steady-state temperature distribution…

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 will…

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   Explanation : 1. Central Difference :  To derive central difference for fourth order approximation of second order derivative by taylor table method…

Aim: Create a Rankine Cycle Simulator using OCTAVE/MATLAB. Objective : The code should calculate the state points of the Rankine Cycle (any type of your choice) based on user inputs.  Then, plot the corresponding T-s and h-s plots for the given set of inputs. Title and axes labels are a must, while legends could…

Aim : Write a code in matlab  to parse the NASA Thermodynamic data file and then calculate the thermodynamic properties of various gas species.   Objective : Write a function that extracts the 14 co-efficients and calculates the enthalpy, entropy and specific heats for all the species in the data file. …

Aim :  Write a code in MATLAB to optimise the stalagmite function and find the global maxima of the function. To explain the concept of genetic algorithm in our own words and also explain the syntax for ga in MATLAB in our report. Plot graphs for all 3 studies and for F maximum vs no. of iterations.…

Aim : To solve second order diffrential equation using Matlab.   Objectives : 1. Write a program in Matlab\Octave that will simulate the pendulum motion. Your objective is to write a program that solves the following ODE. This ODE represents the equation of motion of a simple pendulum with damping    …

Aim : Write a code to solve that can solve an otto cycle and makes plots for it. 1. create PV diagram  2. Output the thermal efficiency of the engine.   Theory :  Otto cycle The otto cycle is named after Nikolaus Otto (1832-1891, german) who is credited as the first creator of a petroleum fuel based internal…