JORGE LOZANO Advanced Turbomachinery Simulations Shock tube simulation project Objective Simulate a shock tube system, by having a 2D geometry, that by introducing region conditions in a transient simulation pressure, temperature and velocity will be able to obtain considering a good mesh refinement. Fig.1 Shock tube after…

JORGE LOZANO Advanced Turbomachinery Simulations Channel flow simulation using CONVERGE Studio Objective Perform a laminar simulation of a channel flow in a 2D geometry, by selecting a pressure difference and obtaining the velocity, pressure mass flow rate, and total cells for each element mesh size, making a conclusion…

JORGE LOZANO Advanced Turbomachinery Simulations Project: Transient simulation of flow over a throttle body  Objective Perform a transient simulation of and elbow geometry with a throttle body inside it, write a detailed report, showing the mesh generated, plots for pressure, velocity mass flow rate and contours for…

JORGE LOZANO Advanced CFD Meshing using ANSA Challenge - 4 BMW M6  MESH   Objective Perform a pre-processing applying PID’s and performing a mesh for a BMW m6 model vehicle, by cleaning up the geometry and perform afterwards the meshing the CAD model. By using the Pre-processing software: ANSA, we’ll…

JORGE LOZANO Advanced CFD Meshing using ANSA Challenge - 2   I will choose to realize a simulation with the 2 units meshing size, due to the correct geometry check and the good elements precision when simulating the valve. In the next image there’s a section cut volume mesh with ANSA from the valve exercise,…

JORGE LOZANO Preprocessor for Structural Analysis using ANSA Meshing Rearview mirror Structural Analysis   Objective   For the given component, check for the geometrical errors and mesh with the given element Quality criteria. Use tetra elements to model the component and there should not and kinks and dips on…

JORGE LOZANO  Advanced CFD Meshing using ANSA Challenge - 8 ADVANCED PRE-PROCESSING WITH ANSA FOR A STRUCTURAL ANALYSIS WITH A TURBOCHARGER Fig.1 Turbocharger modeled in Solid Edge Objective Perform a pre-processing mesh by applying PID’s and cleaning the geometry errors, the Turbocharger must be with a target…

JORGE LOZANO Advanced Turbomachinery Simulations Project: Steady state simulation of flow over a throttle body   Objective Perform a steady state simulation of and elbow geometry with a throttle body inside it, write a detailed report, showing the mesh generated, plots for pressure, velocity mass flow rate and contours…

JORGE LOZANO Introduction to CFD using Matlab and OpenFOAM BlockMesh Drill down challenge Objective Realize a simulation by using the icoFoam solver to simulate the flow through a backward facing step. By creating multiple meshes and comparing the results obtained from each mesh.   Theory   IcoFoam icoFoam solves…

JORGE LOZANO Introduction to CFD using Matlab and OpenFOAM   Simulation of Flow through a pipe in OpenFoam OBJECTIVE Write a program in Matlab that can generate the computational mesh automatically for any wedge angle and grading schemes Reynolds number based on pipe diameter and inlet velocity should be 2100 Working…

JORGE LOZANO Introduction to CFD using Matlab and OpenFOAM Discretization basics   Numerical derivative vs. exact derivative   Objective   Write a program that compares the first, second and fourth order approximations of the first derivative against the analytical or exact derivative. The function that…

JORGE LOZANO Advanced CFD Meshing using ANSA Challenge - 6   Meshing Hood for Structural Analysis   Objective In this challenge a structural mesh is performed (mid surface mesh), by cleaning up an auto motive’s hood assembly, consequently meshing the complete geometry with the target size (5mm) and quality…

JORGE LOZANO Introduction to CFD using Matlab and OpenFOAM   Midterm project - Solving the steady and unsteady 2D heat conduction problem OBJECTIVE Solve the conduction equation using a Transient solver and a Steady state solver using Iterative techniques (Jacobi, Gauss Seidel, SOR) Assume that the domain is a unit…

JORGE LOZANO Advanced CFD Meshing using ANSA   Challenge - 5 Engine-Transmission-Gear box Surface wrap meshing   Objective   In this challenge a surface meshing is performed, adjusting each individual surface wrap for the three separate parts with wrap size for the engine as 8 mm and for the other two parts…

JORGE LOZANO Advanced Turbomachinery Simulations Flow over a backward facing step Objective Simulate a backward facing step 2D simulation, by selecting a pressure difference and obtaining the velocity, pressure mass flow rate, and total cells for each element mesh size, making a conclusion about how the results converge…

JORGE LOZANO Preprocessor for Structural Analysis using ANSA   PROJECT-01 SUBTSTRATE STRUCTURAL MESHING USING BATCH AUTOMATIC MODULE   For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component, the thickness must be assigned. Write…

JORGE LOZANO Preprocessor for Structural Analysis using ANSA Pre-processing rear-door mesh assembly connections   Objective   This week, the connection of the front door is shown in detail and the different types of connection techniques along with different 1D elements.  Now for the given rear door FE model,…

JORGE LOZANO Introduction to CFD using Matlab and OpenFOAM   Simulation of a 1D Super-sonic nozzle flow simulation using McCormack Method OBJECTIVE   The objective in this project is to write code solve the 1D supersonic nozzle flow equations using the McCormack Method: Implement both the conservative and non-conservative…

JORGE LOZANO Advanced CFD Meshing using ANSA Challenge - 7   ADVANCED PRE-PROCESSING WITH ANSA FOR A STRUCTURAL ANALYSIS WITH IP SUBSTRATE MODELS   Objective   5 CAD models are given to perform a geometry clean up separately being meshed separately specifically for structural analysis with a target element…

  JORGE LOZANO Preprocessor for Structural Analysis using ANSA   PROJECT-02 REAR SUSPENSION ASSEMBLY MODEL MESHING FOR STRUCTURAL ANALYSIS   For the given assembly, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component, the thickness must be assigned…

JORGE LOZANO Advanced CFD using ANSYS Fluent   Steady Vs Transient flow over a cylinder   This article shows the flow characteristic of a laminar a flow at 10, 100, 1000, 10000, 100000 Reynolds number. The simulations were performed by solving the steady and transient 2D: Navier-Stokes equation for the 100 Reynolds…

JORGE LOZANO Advanced CFD using ANSYS Fluent   Ahmed Body Challenge   Objective   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…

JORGE LOZANO Advanced CFD using ANSYS Fluent   Exhaust Port Challenge Objective   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…

JORGE LOZANO Advanced CFD using ANSYS Fluent   Conjugate Heat Transfer Analysis on a graphics card.   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…

JORGE LOZANO Advanced CFD using ANSYS Fluent   Cyclone Separator Challenge   Perform an analysis on a 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. …

JORGE LOZANO Advanced CFD using ANSYS Fluent   Gate Valve Parametric Study     CHALLENGE FOR 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…

JORGE LOZANO Computational Combustion using Python and Cantera Compact Notation Derivation for a simple Mechanism   Objective   For this challenge, you will derive the reaction rate ODEs of a simple reaction mechanism. You will have to use the compact notation that was discussed in the last 3 lectures and write…

JORGE LOZANO Computational Combustion using Python and Cantera Multivariate Newton Rhapson Solver Objective In this challenge, you will solve the set of equations given below, Incorporate numerical jacobian. That is, the jacobian should be estimated numerically and not analytically. Solve the problem using Implicit Euler…

JORGE LOZANO Computational Combustion using Python and Cantera Sensitivity Analysis Assignment   Objective Use the source code as shown in the video, but alter it to satisfy the following conditions: Write a code that takes all the reactions from the GRI mechanism and calculates 10 most sensitive reactions The sensitivity…

JORGE LOZANO Computational Combustion using Python and Cantera Auto ignition using Cantera Objective PART I Use the same reactor network code as shown in the video to simulate the Auto Ignition Time for Methane under the following conditions, (simulation time = 10 secs) Plot the variation of Auto Ignition time of…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Flow over a backward facing step Objective   Once you have the base setup ready, run the case for three different base mesh sizes dx = dy = dz =2e-3m dx = dy = dz =1.5e-3m dx = dy = dz =1.0e-3m Contents to be shown in the report: Show the mesh (i.e…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Project - Steady state simulation of flow over a throttle body Objective   Set up and run the steady state simulation for flow over throttle body. Post process the results and show pressure and velocity contours. Show the mesh (i.e surface with edges)…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Project - Transient simulation of flow over a throttle body Objective   Setup and run transient state simulation for flow over a throttle body. Post process the results and show pressure and velocity contours. Show the mesh (i.e surface with edges)…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Prandtl Meyer Shock problem Objective   Shock flow boundary conditions Do a literature search on what BC's are typically used for shock flow problems What is a shock wave? In your own words, describe the physics behind shock waves Effect of SGS parameter…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Conjugate Heat Transfer Simulation Objective  Baseline configuration Setup a flow simulation through a pipe Inlet Reynolds number should be 7,000 HINT : Use the below formula to calculate velocity for corresponding value of REYNOLD NUMBER and…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Shock tube simulation project Objective   Setup a transient shock tube simulation Plot the pressure and temperature history in the entire domain Plot the cell count as a function of time   Documentation Shock tubes are devices for studying the…

JORGE LOZANO Advanced CFD for IC Engine Applications using Converge Literature review - RANS derivation and analysis   Objective Apply reynold's decomposition to the NS equations and come up with the expression for reynold's stress. Explain your understanding of the terms reynold's stress What is turbulent viscosity?…

  JORGE LOZANO Advanced Turbomachinery Simulation using Converge Centrifugal pump simulation   Run 3 cases with following outflow mass flow rate. 130 kg/s 156 kg/s 180 kg/s Create a performance plot (Total Pressure ratio vs Mass flow rate) and obtain pump efficiency. Total pressure can be obtained from mass_avg_flow.out.…

JORGE LOZANO Advanced Turbomachinery Simulation using Converge Super Charger Simulation Project Complete Boundary Flagging and run NO HYDRO. Get Supercharger performance data (i.e total pressure ratio vs mass flow rate) Array of Pressure Ratio = [ 1.1 1.5 2.0 2.2] i.e for these 4 values of Pressure…

JORGE LOZANO Advanced Turbomachinery Simulation using Converge 2D Cavitation simulation   1) Set up and run 3 cases for Winkl Hoffer Nozzle to study Cavitation, Case 1: Set up the case for Pressure difference of 30 bars Case 2: Set up the case for Pressure difference of 70 bars Case 3: Set up the case for Pressure…

JORGE LOZANO IC Engine Calibration using GT-POWER and GT-SUITE   Exploring the GUI of GT-POWER   Objective: Explore the GUI of GT SUITE and list down modules available with brief description. Locate following settings: Time control flag Time step and solution control Integrator/Solver type Explore intercooler…

JORGE LOZANO IC Engine Calibration using GT-POWER and GT-SUITE Basic Calibration of Single cylinder SI-Engine Objective: 1.Run the case at 1800 rpm and list down important parameters Air flow rate BMEP BSFC In-cylinder pressure Increase the power output at 3600 rpm by 10%   SI-Engine System Case Setup The following…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK Geometry simplification of an electronic enclosure assembly Objective: The power board assembly is provided for this assignment. Students should create the workflow in ANSYS workbench and import the CAD model into space claim. Use space claim commands to defeature…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK Non-Conformal Meshing and Solving a Cold plate model   Problem Description:        The model setup is shown in figure 5.1: The model includes two heated plates, cooled by water circulating inside the cold-plate cavity, as well as by air driven by natural convection…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK   Multi-Level Meshing Problem Description: Without any modifications, the model results in about 700,000 elements. Note that this mesh count results from using the non-conformal meshing technique, which reduces mesh bleeding and mesh count. However, this…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK Forced Convection Analysis In this challenge, Students should create the workflow in Ansys workbench and use the simplified geometry of DME assembly provided and solve them for physics. Process As in every workspace simulation in Ansys, the first step is to…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK   Setting up a model (Electronic enclosure)   An electronic steady state simulation must be performed using the mesh generated in a past challenge.   Process The first step is to define all ICEPAK elements to mesh and simulation using the physics…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK   Setting up a model (Hanging Node) A forced convection electronic simulation must be performed, generating postprocessing results from the simulation on a steady state condition.   Process First the initial mesh generation must be performed, obtaining…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK Week 7 - Mid-term Project   Objective Verify the temperature rise for the low voltage control panel for the following configuration. Build the model as per the following information. Mesh the model with nonconformal meshing Panel dimensions: height 2000mm,…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK Week 8 - Natural Convection-II   Build the model as per the following information. Mesh the model with nonconformal meshing Solve the problem for natural convection. Panel dimensions: height 2000mm, width 800 mm depth: 900mm. Actual current incoming: 1214A.…

JORGE LOZANO Electronic Cooling Simulations using ANSYS ICEPAK PCB THERMAL SIMULATION   A PCB board, library files, and traces are imported to create the model. The model is first solved for conduction only, without the components and then solved using the actual components with forced convection.   Process Given…