Week 5.1 - Compact Notation Derivation for a simple Mechanism

  Aim:   To study surface meshing on given geometry, Making three different models with 3 different target lengths= 1mm, 3mm & 5mm. Geometry: The model provided has many flaws which are to be corrected before meshing Given Geometry As we can see there are many single cons and open holes in geometry So we…

AIM:- To Write a code that takes all the reactions from the GRI mechanism and calculates 10 most sensitive reactions Show the reaction strings in the order of greatest sensitivity to the least sensitivity. Plot sensitivities vs the reactions EXPLANATION and CODING APPROACH:- Sensitivity analysis is the study of how the…

AIM:- PART I To simulate the Auto Ignition Time for Methane under the following conditions, (simulation time = 10 secs) Plot the variation of Auto Ignition time of Methane with a constant temperature of 1250K and pressure varying from 1 to 5 atm. Plot the variation of Auto Ignition time of Methane with a constant…

AIM:- To solve the below set of equations. To Incorporate numerical jacobian.  To solve the problem using Implicit Euler Method/Backward Differencing. To choose a time step and explain what is the ideal step size in this case? Code and Explanation:- We are calling this as a Multivariate Newton Raphson because we were…

AIM:- To do the literature review and write a code to substantiate your claims and Explain the below When does a ODE become unstable? How does stability affect engineering simulations? Can stability condition be derived for all types of problems? Explanation and Code:-  When does a ODE becomes unstable:- Let us understand…

AIM:- To derive the reaction rate ODEs & production of each species for the simple reaction mechanism given below. CO2+O2<=>CO2+O O+H2O<=>OH+OH CO+OH<=>CO2+H H+O2<=>OH+O EXPLANATION :- Reaction rate or the rate of reaction is the speed at which a rate chemical reaction takes place. We define…

AIM:- Combustion efficiency Calculation after Preheating Case:-1 Effect of preheating on adiabatic Flame Temperature (Change in temperature from 298K to 600K) Case:-2 Does preheating help with fuel savimg. Formula for combustion efficiency CODE and Description:- Let us under stand what is recuperator:- A recuperator is…

AIM and Tasks to perform:- Mixture Calculations are performed by Quantity class 1. Use the "moles" method/function, calculate the number of moles of the object A and explain how it is calculated analytically. 2. Use the method mass_fraction_dict() of the A object and explain it analytically 3. What is happening in lines…

AIM:- 1. Adiabatic flame temperature variation with Equivalence ratio (In constant volume-chamber) 2. Adiabatic flame temperature variation with Heat loss (In constant pressure-chamber) 3. Adiabatic flame temperature variation with respect to Alkane, Alkene, Alkyne 4. Adiabatic flame temperature variation with respect…

AIM:- To perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species. To plot contours and line plots for CO2, H2O, CH4, N2, O2, NOx emissions & Soot formation To add the water content in the fuel from 5% to 30% by mole and observe the effect of it on…

AIM:- To perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%.  to obtain the mass flow rates at the outlet for each design point. To calculate the flow coefficient and flow factor for each opening and plot the graph. To discuss the results of the mass flow rate and flow…

AIM:- To perform a steady-state conjugate heat transfer analysis on a model of a graphics card. To run the simulation for best possible mesh with combination of coarse and refined mesh in different regions and explain the mesh settings.  run the simulation by varying the velocity from 1m/sec to 5m/sec for at least…

AIM:- To explain the mathematical models that have adopted for CFD calculations that are based on Rayleigh Taylior waves. To perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the basemesh being 0.5 mm and the other with refined mesh by water and user material(`rho`:- 400kg/m^3, `mu`:-0.001kg/m-s).…

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

AIM:- To simulate Ahmed's body in ansys fluent. To run the simulation for the velocity of 25 m/sec with the default air properties in fluent. To describe Ahmed's body and its importance. Explain the reason for the negative pressure in the wake region.  Explain the significance of the point of separation. To create…

AIM:- To write a program in Matlab that can generate the computational mesh automatically for any wedge angle and grading schemes. To show that the velocity profile matches with the Hagen poiseuille's equation. To show that the velocity profile is fully developed. To post process velocity and shear stress in paraview.…

AIM:- Specification The number of cells along the direction of flow = 200 The number of cells along the y-direction for each block = 10 Inlet Velocity is 1 m/sec.  Boundary condition specification Follow the specifications that are provided in the following figure. Desired output Run the first simulation without grading…

AIM:- To describe what is finite volume method and the need of interpolation schemes and flux limiters in FVM in our own owrds witha an example. GIVEN:- Use the 1D heat  equation  `d/dx*alpha.(dT)/dx` EXPLANATION:- Finite Volume Method (FVM):- This is similar to FDM (Finite differencing method), we use points…

AIM: To write a code to solve supersonic nozzle flow equations using macormack method. To implement both the conservative and the non conservative forms of governing equations. To perform grid dependence test. To write the seperate functions for the conservative and non-conservative forms. To figure out the minimum number…

AIM: To solve the 2D heat conduction equation in steady state & Transient State Analysis by using the point iterative techniques.  Jacobi  Gauss-seidel Successive over-relaxation To write code for both implicit and explicit schemes (This is for the Transient Analysis only) GIVEN: Domain is the unit square.…

AIM: Derive the following 4th order approximations of the second order derivative 1. Central difference 2. Skewed right sided difference 3. Skewed left sided differe 4. After derivating, write a program to evaluate the second order derivative of the analytical function exp(x)*cos(x) and compare it with the 3 numerical…

AIM: To write a code that solves second order ODE which represents the equation of motion of a simple pendulum with damping. To simulate themotion of the pendulum for 0-20 seconds for angular displacement=0, angular velocity=3 rad/sec^2 at time=0. To create an animation video of the  motion of the simple pendulum.…