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Transient flow over a throttle body

   In this Challenge I\'m setting up a transient flow of the Throttle body.  SET UP from the steady state simulation we already know inflow velocity in the elbow shape pipe. According to the plots red colored plot shows that average inflow velocity is approximately 190m/s. Now we can roughtly calculate how…

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    Read more Projects by GIORGI GVASALIA (26)

    Week 9: Project 1 - Surface preparation and Boundary Flagging (PFI)

    Objective:

    Objective   To make NO HYDRO case set up of an IC engine. Make boundary flagging and complete the whole set up in order to figure out if the Geometry moves correctly during the run. Geometry   Boundary Flagging Piston (Piston Head) Inflow  (Inlet) Marked as Red liner (Marked in Red) Cylinder Head Exhaust…

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    03 Dec 2021 06:31 AM IST

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      FINAL TEST

      Objective:

      Questions based on PFI Engine:   Q1. What is the Compression ratio for the engine?    Compression ratio is defined as a ratio of the maximum volume to the minimum volume of the combustion cylinder. in our case compression ratio is `(5.74e^-4)/(5.70e^-5) = 10.07`     Q2. Modify the compression…

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      30 Aug 2021 01:08 PM IST

      • CFD
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      Week 11: Project 2 - Emission characterization on a CAT3410 engine

      Objective:

      Objective   We should simulate 2 types of piston heads: open-W and Omega shape. Our objective is to see how the design of a piston head affects engine performance and emission characteristics.   Creating `60^0` section of the combustion cylinder     To create a section of the combustion…

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      30 Aug 2021 11:40 AM IST

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        Week 10: Project 1 - FULL HYDRO case set up (PFI)

        Objective:

        Objective   we have already created a no-hydro simulation of the PFI case in the challenge "Week 9: Project 1 - Surface preparation and Boundary Flagging (PFI)", now it's time to set up a full-hydro case and see how the combustion occurs in our engine.   Engine parameters     Engine Geometric…

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        21 Aug 2021 12:39 AM IST

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        Week 9 - Mini project - Flow over an Airfoil

        Objective:

        Objective   Simulate flow over a 4 digit airfoil i.e NACA 2412 Airfoil. Drag coefficient Vs Angle of Attack Lift coefficient vs Angle of Attack Compare the effect of turbulence models on the above two results. Make sure that the inlet Reynolds number is 200,000 Make sure you do the above calculations for the…

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        11 Aug 2021 01:10 PM IST

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          Project 1 : CFD Meshing for Tesla Cyber Truck

          Objective:

          Objective:   Firstly, completing topology cleanup, afterwards generating surface mesh. Eventually, creating wind tunnel geometry surface meshing and extracting single volume model for further volumetric mesh generation.   Geometry   Figure 1   Topology optimization      Within the…

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          29 Jul 2021 04:57 PM IST

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          Week 4 Challenge : CFD Meshing for BMW car

          Objective:

          Objective      To clean the provided cad model of the BMW car, make surface meshing with the surface grouping and sizing per the challenge question. Additionaly, create wind tunnel, therefore volumetric mesh as well.   Geometry                                                   Figure 1   Singlecon detection   Firstly,…

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          25 Jul 2021 09:16 PM IST

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          Steady Vs Unsteady flow over a cylinder

          Objective:

          Objective   To simulate airflow over the 2d cylindrical shape object and capture phenomenon called "Vortex Shedding". Our study should be divided in 2 parts:    Part 1:  Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.    Part 2: 1) Calculate…

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          20 Jan 2021 11:18 AM IST

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          Ahmed Body Challenge

          Objective:

          Objective   Answer the following questions   Describe Ahmed body and it's importance   Explain the reason for the negative pressure in the wake region.    Explain the significance of the point of separation.       Expected results   Velocity and pressure contours. …

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          22 Dec 2020 08:20 PM IST

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            Week 3 Challenge

            Objective:

                                                                  Volumetric Meshing of a Turbocharger Objective   Resolve all errors in the provided geometry. Create and assign PIDs perform…

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            16 Dec 2020 11:00 PM IST

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              Week 2 Challenge

              Objective:

              Objective   to solve all problems we have i the provided Geometry. Generate Mesh with 3 different Element sizes: 1mm, 3mm and 5mm.   Geometry (With intentional errors)   As you see in The figure above, we have a valve geometry. Our first option is to resolve all the problems which the geomety has…

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              19 Nov 2020 09:51 PM IST

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                Turbo Charger Simulation Project

                Objective:

                 Objective    To simulate a turbocharger while pressure ratio has 3 different values: 2Bar 2.5Bar and 3Bar. In addition, while simulating one case increase the simulation time to see how it will affect convergence for the angular velocity of the turbine.   Theory   Turbines have been used for centuries…

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                11 Nov 2020 10:06 PM IST

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                  Mixing efficiency

                  Objective:

                  Objective   To simulate and understand working principle of a mixing tree. Run grid dependence test to choose the mesh grid size for further study. In the provided report we will cover 2 cases:    Case1: Short mixing tree with a hot inlet velocity of 3m/s. Momentum ratio between hot and cold inlets…

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                  02 Nov 2020 11:14 PM IST

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                    Conjugate Heat Transfer Simulation

                    Objective:

                      Objective     To simulate Conjugate heat transfer in a solid aluminum pipe. Run grid dependence test to see how it affects simulation results. Understand how the Super-cycle modeling works and realize importance of the nondimensional term Y+.    Intoduction     In this challenge…

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                    18 Oct 2020 03:12 PM IST

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                      2D Cavitation simulation

                      Objective:

                                                                                          Winkl Hoffer Nozzle    Objective    to simulate Winkl Hoffer nozzle…

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                      14 Aug 2020 03:20 PM IST

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                        Super Charger Simulation Project

                        Objective:

                        Purpose    To simulate roots type supercharger with 4 different boundary conditions at the outlet (Array of the pressure ratio = [1.1 1.5 2 2.2]Bar). To get supercharger performance data (Total pressure ratio vs mass flow rate). Furthermore, see the importance of the total energy solver.   Theory …

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                        14 Jul 2020 04:10 PM IST

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                          Proportional Valve simulation

                          Objective:

                          Objective   To simulate proportional valve, run 6 cases: 3mm, 4mm and 5mm lift sizes with and without Adaptive Mesh Refinement (AMR), make a plot ilustrating pressure force along Z and lift dependance.   Theory   Proportional valve is a valve which relies on the statics to supply reduced pressure to an output…

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                          05 Jul 2020 11:44 PM IST

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                            Centrifugal pump simulation project

                            Objective:

                               Intoduction     Main goal of this project is to simulate centrifugal pump with 3 different values of massflow rate and figure out how it affects pump's performance, in other words, if and how it will change the pressure head and the efficiency.    Thoery    Centrifugal pump…

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                            23 May 2020 02:07 AM IST

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                              Shock tube simulation project

                              Objective:

                                                                                                          SHOCK TUBE  Introduction   Main goal of…

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                              19 May 2020 10:50 PM IST

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                                Prandtl-Meyer Shock problem

                                Objective:

                                Introduction   In this challenge we are setting up a simulation to capture expansion shock wave, when supersonic flow turns around a convex corner.      In our case we have a domain, in which we set inlet velocity as a 680m/s when the temperature is 286.1K, meaning that we have Mach = 2 at the…

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                                10 May 2020 05:37 PM IST

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                                  RANS derivation and analysis

                                  Objective:

                                   1) Introduction    We know that Navier-stokes equations could be used in any fluid flow applications to effectively approximate the results, but when we encounter turbulent flows we need mesh elements with tiny dimensions, for instance in IC engines largest turbulent length scales equal to small values…

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                                  09 May 2020 07:06 PM IST

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                                    Transient flow over a throttle body

                                    Objective:

                                       In this Challenge I\'m setting up a transient flow of the Throttle body.  SET UP from the steady state simulation we already know inflow velocity in the elbow shape pipe. According to the plots red colored plot shows that average inflow velocity is approximately 190m/s. Now we can roughtly calculate how…

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                                    29 Apr 2020 05:29 PM IST

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                                      Flow over a throttle body Steady State

                                      Objective:

                                         Problem Intorduction     In this challenge i\'m simulating the flow over a throttle body, my case is steady state and the throttle body in the elbow shape pipe is fully opened.  SET UP   we have air as a fluid in our domain, As an initial conditions at the Inlet boundary we have 1.5Bar…

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                                      26 Apr 2020 10:20 AM IST

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                                      Channel flow

                                      Objective:

                                         In this challenge we are simulating Channel flow, in which we have inlet at which we set Total (Stable) pressure to be 100001Pa and 100000Pa at the Outlet.Airflow is incompressible in our case. According to thermodynamics because of pressure difference fluid flow will accure from Inlet towards Outlet, so my…

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                                      25 Apr 2020 02:59 PM IST

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                                        Backward facing step

                                        Objective:

                                        1) MESH 1.1) 2e-3m mesh  1.2) 1.5e-3m mesh 1.3) 1e-3m mesh In the pictures above is shown the difference between 3 base mesh sizes 2) pressure and velocity contours (animations) 2.1) animation of velocity contours mesh size 1e-3m 2.2) animation of pressure contours mesh size 1e-3m 2.3) animation of velocity contours…

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                                        19 Apr 2020 11:07 AM IST

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                                          Skewed and symmetric stencils

                                          Objective:

                                          For deriviing 4th order approximation of second-order derivative i use 3 types of approximation: central, skewed right-side and skewed left-side methods.   1) central differencing is a method when we are getting information from both side of node to get accurate derivative for example in my case if i want to calculate…

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                                          20 Feb 2020 03:07 PM IST

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                                            Showing 1 of 26 projects