Week 3: Flow over a backward facing step

Objective: Solving the steady and unsteady 2 - Dimensional heat conduction problem using explicit and implicit scheme methods. 1. Solving 2 - Dimensional steady heat conduction problem using explicit scheme. 2-D steady heat conduction equation is as follows : `((del^2T)/(delx^2) + (del^2T)/(dely^2)) = 0` we discretize…

Introduction: The Ahmed body is a simplified car body used in the automotive field to study the impact of the flow pattern on 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 and Objectives: To simulate the Prandtl Meyer Shock flow in Converge CFD. 1. Simulate the supersonic and subsonic flow through a duct having a sharp corner. 2. Study the formation of shock waves in the duct. 3. Observe the effect of the SGS parameter on shock location and cell count. Theory and Introduction: What is…

Objective: To simulate Conjugate Heat Transfer (CHT) analysis on an exhaust port using Ansys Fluent. 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…

Emission characterization on a CAT3410 engine: Aim: The Aim of this project is to simulate the combustion process in a Diesel Engine using two different piston configurations, namely omega and open w piston. It is intended to compare the performance of the engine and emission characteristics of the engine with these two…

Questions based on PFI Engine: 1. What is the Compression ratio for the engine? Compression ratio is the ratio of the maximum volume of the cylinder when the piston is at the bottom dead center to the minimum volume of the cylinder when the piston is at TDC. From the below graph Vmax and Vmin values were found out. `V_c`=…

Port Fuel Engine (PFI) FULL HYDRO Case Setup: Objective (continuation from the previous project: https://skill-lync.com/student-projects/week-9-project-1-surface-preparation-and-boundary-flagging-pfi-17) To Calculate: 1. The compression ratio of this engine. 2. Calculate the combustion efficiency of this engine 3. Use…

Flow over a Cylinder: Steady and Transient Analysis in Ansys Fluent. Objective:  Simulate the flow over a cylinder for steady and transient cases and observe the phenomenon of Karman vortex street. Understanding the vortex shedding for different Reynolds numbers by changing the inlet velocities accordingly. Calculate…

Conjugate Heat Transfer Simulation: Aim: In this project, we simulate the flow of air through an aluminium pipe that is heated from the outside. We observe the conjugate heat transfer and derive appropriate results that include plots and contours for temperature, velocity, etc We also understand the concept of super-cycling.…

Project 1 - Surface preparation and Boundary Flagging of a PFI Engine: Objective: Import the CAD model of the IC engine into Converge CFD and run a diagnosis. Look for errors and solve them, without compromising actual model. The main objective is to set up the case for no hydrodynamic simulation, solve it, and create…

Abstract: Mixing Tee joints are widely used in the petrochemical, HVAC industry, etc. In this project two types of mixing tee joints are taken varying in length: short and long and simulated the flow of hot air and cold air through their inlets at different temperatures and different velocities according to the given momentum…

Aim: Literature Review – Reynolds-Averaged Navier-Stokes derivation and analysis. Objective: To apply Reynolds decomposition to the NS equations and come up with the expression for Reynolds stress. To explain the understanding of the terms Reynolds stress. To explain what is turbulent viscosity and how is it different…

Shock tube simulation project Abstract: The report contains a detailed description of the Shock tube Simulation problem using converge CFD software, solving it using CYGWIN, and post-processing the result using ParaView. This Case Study contains a rectangular duct that has two sections along with a diaphragm in between.…

Transient simulation of flow over a throttle body: Abstract: A throttle body controls airflow and plays a major role in the performance and efficiency of a spark-ignition engine. Controlling airflow into the engine is a crucial factor in controlling the engine’s air/fuel ratio. Throttle bodies usually use butterfly…

Steady-state simulation of flow over a throttle body: Abstract: A throttle body controls airflow and plays a major role in the performance and efficiency of a spark-ignition engine. Controlling airflow into the engine is a crucial factor in controlling the engine’s air/fuel ratio. Throttle bodies usually use butterfly…

Flow over a backward-facing step. Abstract: The backward-facing step is an illustration model for separation flows which are seen widely in aerodynamics flows, engine flows, condensers, vehicles, heat transfer systems, and flow around buildings, etc. The flow separation after a simple stage will introduce separation bubble…

Channel Flow Simulation in Converge CFD: Objective:  1. Creation of channel model in Converge CFD software. 2. Setup the case with appropriate material properties, boundary conditions, and different base grid sizes. 3. Run the simulation using the CYGWIN terminal. Plot mass flow rate, average velocity, and pressure…

In this assignment we derive fourth order approximation for second order derivative using three schemes. They are : 1) Central difference scheme                                        2) Skewed right-sided difference scheme…