Week 4.1: Project - Steady state simulation of flow over a throttle body

AIM

To Determin Steady State Simulation OF Elbow Using Converge

INPUT

BOUNDARY CONDITION

Predefine mixture-Air

Simulation Parameter

Solver: Steady-state

Simulatio mode- Fully Hydrodynamic

Simulation Time Parameter

End Time-15000 Cyc

min-time step-1e-9

Max-time step-1

Max-Convection CFL-1

Solver Parameter

Convection CFL in Final Stage-0.5

BOUNDARY

INLET PRESSURE:1.5e5 Pa

OUTLET PRESSURE:1e5Pa

Throttle-wall

motion type: Stationary

Surface movement: Fixed

wall-wall

Region & Intialisation

Create Region Species-air

Grid Controls

Base Grid-0.02

Fixed Embedding

Entity type-Boundary

Boundary ID-Throttle

mode-Permanant

Scale-1

Embadded Layer-2

for Fine layer in around Throttle

OUTPUT

CYWIN

MESH

MESH REFINEMET BY EMBEDDED IN THROTTLE REGION

VELOCITY

PRESSURE

Thottle

Vector

GRAPH

MASS FLOW RATE OUTLET

PRESSURE OUTLET

VELOCITY OUTLET

CONCLUTION

For better mesh in thottle Area refinement of mesh done from 0.004m to 0.002 m to capture embadded 2 layer between elbow & thottle

From output velocity =200 m/s approximate So from that we can conclude for transent flow rate for Transient State, Inlet side Thottle region Pressure is higher and velocity is reducing due to throttle V-150m/s