Week 2 - Flow over a Cylinder.

Try to understand the concept of genetic algorithm by referring to various sources before you attend this challenge. Look out for information regarding stalagmite function and ways to optimise it.Write a code in MATLAB to optimise the stalagmite function and find the global maxima of the function.Clearly explain…

Write a program in MATLAB to simulate the forward kinematics of a 2R Robotic Arm, as shown in the video. Create an animation file of the plot.Upload an animation on You tube and provide the You tube link for an animation in your report.Code and output:Code Explanation:1. Initially consider the length of the both the…

Part A:1. Search and list out the total weight of various types of aircrafts. 2. Is there any difference between ground speed and air speed?3. Why is it not recommended to use aircraft engine power to move it on the ground at Airport? 4. How an aircraft is pushed to runway when its ready to take off?5. Learn…

Aim 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 Inlet casing cover = 5…

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 Geometry:   The given model has been imported into the ANSA…

For a defined driving cycle, calculate the energy required for braking. Why electric motor can’t develop braking torque at high speed similar to starting? How electric and mechanical brakes are coordinated?  Make a MATLAB program which plots contour of given motor speed, torque and efficiency values. Attach…

AIM: 1. 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: 1.  Which types of power converter circuits are employed in electric and hybrid electric vehicle?    2.  An Electric Vehicle's powertrain with 72V battery pack in shown in the diagram below. The duty ratio for acceleration operation is 'd1' and for the braking operation the duty ratio…

AIM: Use ADVISOR tool and simulate the following    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…

AIM: To solve the control logic for given condition using state flow in simulink. PART 1 Implement control logic of a “washing machine” using Stateflow as per given sequence:  If the power supply is available, the system gets activated  If the Water supply is not available, stop the process &…

AIM: Make a Simulink model of Doorbell using solenoid block with the following details Use a thermistor to sense the temperature of a heater & turn on or turn off the fan as per the below conditions PART 1 THEORY: A solenoid  is a type of electromagnet, the purpose of which is to generate a…

AIM : To study the combustion simulation on Non-premixed combustion in Fluent. OBJECTIVE :  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…

AIM: GATE VALVE SIMULATION 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 the graph. Discuss…

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: 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:Rayleigh Taylor Instability 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…

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…

AIM:Run the simulation for the velocity of 25 m/sec with the default air properties in fluent. For this challenge, you will have to provide answers to the following questions: Q1. Describe Ahmed's body and its importance. Q2. Explain the reason for the negative pressure in the wake region.  Q3. Explain the significance…

AIM: Simulate the flow over a cylinder and explain the phenomenon of Karman vortex street. OBJECTIVE: 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…

Case 1  Short mixing tee with a hot inlet velocity of 3m/s. Momentum ratio of 2, 4.  CASE SETUP: we have to import the given mixing tee diagram in the space claim (Geomentry). And supress the required shape for physics. Name the boundary (inlet, oulet, walls) and generate the mesh. In setup we give the magnitude…

WEDGE BOUNDARY CONDITION : wedge boundary condition is used for the wedge angle that is less than 5. Whereas, for more than 5 wedge symmetry condition is used. In this challenge we are supposed to run the stimulation for different angles of 10, 25, 45 and calculate the parameter each.The intial conditipon for each case…

HYDRODYNAMIC ENTRANCE REGION : The hydrodynamic entrance regio refers to the area of the pipe where the fluid enters and develops a velocity profile due to the viscous forces spreading from a pipe's interior wall. This region has a non uniform flow. The fluid enters a pipe at a constant speed, so the fluid particles in…

Finite Volume Method (FVM) Form of discretization based on the integral form of conservation equation over a volume. The method is used in many computational fluid dynamics solvers. "Finite volume" refers to the small volume surrounding each node point on a mesh. These terms are then evaluated as fluxes at the surfaces…

GIVEN: Number of cells along the x direction (longer dimension) = 200 Number of cells along the longer y direction = 20 Boundary Conditions: Inlet and Outlet = 0.01, Top and Bottom wall = 0.20, sidewall = 0.01. Without grading and with grading 0.2. velocity profile 0.085 Procedure: we have to find the file that has…

GOVERNING EQUATION : NON-CONSERVATION : CONSERVATION : MATHLAB CODE : close all clear all clc n=61; x=linspace(0,3,n); dx=x(2)-x(1); rho=1-0.3146*x; t=1-0.2314*x; v=(0.1+1.09*x).*t.^0.5; a=1+2.2*(x-1.5).^2; nt=1400; gamma=1.4; dt=min(0.5.*dx./(sqrt(t)+v)); tic; [v_n,rho_n,t_n,Mach_num_n,mass_flow_n,ctr_n,dt_n]= non_conservation(n,x,dx,rho,t,v,a,nt,gamma);…

function T=sor(error,Tol,nx,ny,T_old,w,T) while error > Tol for i=2:nx-1 for j=2:ny-1 Tgs(i,j)=(1/4)*(((T(i-1,j)+ T_old(i+1,j)))+ ((T(i,j-1)+T_old(i,j+1)))); T(i,j)=(1-w)*T_old(i,j)+w*Tgs(i,j); end end error=max(max(abs(T_old - T))); T_old=T; contourf(T); axis ij; axis ij; pause(0.01) end function T=assig5_gaussseidel_sor(error,Tol,nx,ny,T_old,T)…

function [error_1,error_2,error_3,central_difference,skewed_right_difference,skewed_left_difference]=taylor_table(x,dx,analytical_derivative) exp_x=@(x)exp(x)*cos(x); A_1=[1 1 1 1 1;-2 -1 0 1 2;4 1 0 1 4;-8 -1 0 1 8;16 1 0 1 16]; A_2=[1 1 1 1 1 1;0 1 2 3 4 5;0 1 4 9 16 25;0 1 8 27 64 125;0 1 16 81 256 625;0 1 32 243 1024…