Engineering

Car CFD

Aerodynamics is the branch of fluid dynamics concerned with studying motion of air, particularly when it interacts with a moving object. Understanding the motion of air (often called flow field) around an object enables the calculation of forces and moments acting on the object. External aerodynamics is the study of flow around solid objects of various shapes. For instance, evaluating the lift and drag on an airplane or the flow of air over a wind turbine blade.

The objective of this case is to study impact of flow over a car body and to find influence of rear wing on Coefficient of Lift & Drag.

 

Case study on Modeling of F1 Racing Car

A short case study for teams to explore the technique of modeling by making use of standardized blueprints of cars available is presented for a quick go through by young enthusiasts. This is available is typically all good CAD tools. Here the advantage is taken of technically strong and workwise simple and convenient solidworks.  

 

CONJUGATE HEAT TRANSFER

Conjugate heat transfer is common in many engineering applications, including heat exchangers, HVAC, and electronic component design.

  • Conjugate heat transfer refers to the ability to compute conduction of heat through solids, coupled with convective heat transfer in a fluid.
  • Conduction dominates in solids whereas convections usually dominates in fluids.
  • Coupled boundary conditions are available for wall zones that separates two cell zones.
  • Either the solid zone or the fluid zone, or both, may contain heat source.

CFD Simulations for FAN Models

The circulation and the effect of different Fan blade shapes can be analyzed using computational fluid dynamics. This approach can also be utilized for parametric optimization. A brief case study of the same is presented to expose readers through the technique along with a video which showcase simulations which can be realized. 

Introduction

CFD analysis of Gorlov TurbineDue to shortage of fossil fuels & environmental issues, there is an urgent need to establish a clean, safe and affordable new renewable source of energy. The ocean and river flow offers immense potential for clean energy extraction .Tidal stream turbines and run of the river turbines have been identified as prospective marine energy converters.

 

INTRODUCTIONApplication of VOF Model

The VOF model can model two or more immiscible fluids by solving a single set of momentum equations and tracking the volume fraction of each of the fluids throughout the domain.

Typical applications include :

  • Prediction of jet breakup
  • Motion of large bubbles in a liquid
  • Motion of liquid after a dam break
  • Steady or transient tracking of any liquid-gas interface.

Sheet metal

INTRODUCTION

Sheet metal is metal formed by an industrial process into thin, flat pieces. It is one of the fundamental forms used in metalworking and it can be cut and bent into a variety of shapes. Thicknesses can vary significantly; extremely thin thicknesses are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate.

vent silencer

INTRODUCTION

High pressure fluids when released to the atmosphere, generates high noise level. This is due to high velocity flow through the valve and turbulence created around any obstacle that suddenly restricts or change the flow directions. The noise is dangerous to the health and safety of plant’s personnel and also environmentally unacceptable. For this purpose, vent silencer are used to reduce the noise level.

Typical applications of Vent Silencers are in:

  • Oil & gas processing
  • Industrial processing
  •  Chemical processing
  •  Safety relief valve system
  •  Air compressor vents 

Introduction

CrushedImpact is one of the very important subjects which always have been considered in mechanical science. Control on an impact is not a plausible solution.  It is often required to present the transfer of impact to other vulnerable part of a structure.  When it is necessary, one of the best methods of absorbing energy of impact is by using Thin-walled tubes.  These tubes collapses under impact and with absorption of energy, it prevents the damage to other parts.

Scissor Lift 1

INTRODUCTION

The scissors lift is an elevator with a system of levers and hydraulic cylinders on which the metal platform is capable of moving in the vertical plane. This is achieved by using linked, folding supports in a criss-cross “X” pattern, called scissor mechanism.

The need for the utilization of elevators is incredibly wide and it runs across workshops, factories, labs, fixing of billboards, residential/commercial buildings to repair street lights, etc. 

Introduction

CFD analysis of Butterfly Valve With Without Spring ForceA rigid body is a solid object that moves through a fluid without deforming. Its motion is dictated by the fluid forces and torques acting upon it, plus any external forces (such as gravity) and external torques. Within ANSYS CFX, a rigid body can be modeled in two ways:

  1. A rigid body can be defined by a collection of 2D regions that form its faces. When a rigid body is modeled in this way, the rigid body itself does not need to be meshed. Mesh motion is used to move the mesh on the rigid body faces in accordance with the solution of the rigid body equations of motion.
  2. Alternatively, an immersed solid can be defined as a rigid body. In this case the motion of the immersed solid is dictated by the solution of the rigid body equations of motion.

CASE STUDY ON TANK SLOSHING

INTRODUCTION

The movement of liquid cargo within a partially filled tank from one side of the tank to the other in the form of wave when being transported is referred to as “Tank Sloshing.” Severe effects of sloshing are caused by sudden changes - such as braking and cornering.