2D Free Jet Simulations (FLUENT)

Slides:

Advertisements

Similar presentations

Lecture 20: Laminar Non-premixed Flames – Introduction, Non-reacting Jets, Simplified Description of Laminar Non- premixed Flames Yi versus f Experimental.

Advertisements

Outline Overview of Pipe Flow CFD Process ANSYS Workbench

Svetlana Marmutova Laminar flow simulation around circular cylinder 11 of March 2013, Espoo Faculty of Technology.

Basic Governing Differential Equations

Elementary Mechanics of Fluids

Pipe Flow Example Water flows steadily into the circular pipe with a uniform inlet velocity profile as shown. Due to the presence of viscosity, the velocity.

University of Western Ontario

Dr. R. Nagarajan Professor Dept of Chemical Engineering IIT Madras Advanced Transport Phenomena Module 4 - Lecture 15 Momentum Transport: Steady Laminar.

External Convection: Laminar Flat Plate

Output - Derived Variables Derived Variables are quantities evaluated from the primitive (or solved) variables by PHOENICS. It means, PHOENICS first solve.

Nozzle Study Yan Zhan, Foluso Ladeinde April, 2011.

An Analysis of Hiemenz Flow E. Kaufman and E. Gutierrez-Miravete Department of Engineering and Science Rensselaer at Hartford.

2D Free Jet Simulations (FLUENT)

Pharos University ME 352 Fluid Mechanics II

3D Hg Jet Simulations Yan Zhan June 13, Outline Hg Jet Inlet Condition – Case1: Outlet of the pipe without a bend and a weld – Case2: Outlet of.

MECH 221 FLUID MECHANICS (Fall 06/07) Tutorial 9

ME 259 Fluid Mechanics for Electrical Students

Pitot Stagnation Tubes Under Laminar Conditions *P7.24 Jace Benoit February 15, 2007.

POSTER TEMPLATE BY: Presentations.com POSTER TEMPLATE BY: Presentations.com Outlet Inlet n’=375 n=150 n φ =75 (dφ=1.2 ⁰ ) Extra Terms.

High Power Hg Target Conceptual Design Review Hg Jet Nozzle Analysis M. W. Wendel Oak Ridge National Laboratory February 7-8, 2005.

Monroe L. Weber-Shirk S chool of Civil and Environmental Engineering Basic Governing Differential Equations CEE 331 June 12, 2015.

Additional Calculations of the MERIT Mercury Jet Using the UCLA HIMAG Code Neil Morley and Manmeet Narula Fusion Science and Technology Group, UCLA

The structural and Fluid flow analyses of the Hydrogen Absorber Window for the Muon Cooling collaboration project Presented at the MICE meeting at IIT.

Thermal Analysis of Helium- Cooled T-tube Divertor S. Shin, S. I. Abdel-Khalik, and M. Yoda ARIES Meeting, Madison (June 14-15, 2005) G. W. Woodruff School.

Preliminary Assessment of Porous Gas-Cooled and Thin- Liquid-Protected Divertors S. I. Abdel-Khalik, S. Shin, and M. Yoda ARIES Meeting, UCSD (March 2004)

Design of Scintillator Die Fermi National Accelerator Laboratory Department of Mechanical Engineering Northern Illinois University.

1 3D Simulations for the Elliptic Jet W. Bo (Aug 12, 2009) Parameters: Length = 8cm Elliptic jet: Major radius = 0.8cm, Minor radius = 0.3cm Striganov’s.

Lecture 7 Exact solutions

Monroe L. Weber-Shirk S chool of Civil and Environmental Engineering Basic Governing Differential Equations CEE 331 July 14, 2015 CEE 331 July 14, 2015.

Chapter 7 Sections 7.4 through 7.8

CHE/ME 109 Heat Transfer in Electronics

Fluid FRICTION IN PIPES

Application of the Momentum Equation

ICHS4, San Francisco, September E. Papanikolaou, D. Baraldi Joint Research Centre - Institute for Energy and Transport

1 Institute for Fluid Mechanics and Heat Transfer Conex mid-term meeting, Oct 28th 2004, Warsaw 1 Numerical simulation of the flow in an experimental device.

1 MAE 5310: COMBUSTION FUNDAMENTALS Introduction to Laminar Diffusion Flames: Non-Reacting Constant Density Laminar Jets Mechanical and Aerospace Engineering.

Chapter 7 External Convection

Note – throughout figures the boundary layer thickness is greatly exaggerated! CHAPTER 9: EXTERNAL INCOMPRESSIBLE VISCOUS FLOWS Can’t have fully developed.

Dr. R. Nagarajan Professor Dept of Chemical Engineering IIT Madras

Convection: Internal Flow ( )

Simulation Of 2D Hg Jet Using Implicit LES Method Yan March. 20 th

CFD Lab 1 Simulation of Turbulent Pipe Flow Seong Mo Yeon, Timur Dogan, and Michael Conger 10/07/2015.

Statika Fluida Section 3. Fluid Dynamics Objectives Introduce concepts necessary to analyse fluids in motion Identify differences between Steady/unsteady.

CHAPTER 9 Velocity Profiles for Circular Sections and Flow in Noncircular Sections.

Potential Flow and Computational Fluid Dynamics Numerical Analysis C8.3 Saleh David Ramezani BIEN 301 February 14, 2007.

Heat Transfer Su Yongkang School of Mechanical Engineering # 1 HEAT TRANSFER CHAPTER 8 Internal flow.

Date of download: 5/30/2016 Copyright © ASME. All rights reserved. From: In Situ PLIF and Particle Image Velocimetry Measurements of the Primary Entrainment.

Mi9 Some experimental measurements of the Diffuser flow in a Ducted Wind Turbine assisted by two ejectors Kypros F. Milidonis Department of Mechanical.

Momentum Equation and its Applications

1 CHARACTERIZATION OF TRANSITION TO TURBULENCE IN SOLITARY WAVE BOUNDARY LAYER BY: BAMBANG WINARTA - TOHOKU UNIVERSITY HITOSHI TANAKA - TOHOKU UNIVERSITY.

Space Air Diffusion. Fundamentals  Objectives – thermal comfort and indoor air quality – even space air conditions – acceptable air cleanliness – acceptable.

Internal Flow: General Considerations. Entrance Conditions Must distinguish between entrance and fully developed regions. Hydrodynamic Effects: Assume.

Tsinghua University, Beijing, China

Date of download: 10/9/2017 Copyright © ASME. All rights reserved.

Internal Convection: Overview

Chapter 8: Internal Flow

Energy Loss in Valves Function of valve type and valve position

From: On Development of a Semimechanistic Wall Boiling Model

2D Jet Simulation Testing

Flow Through a Pipe Elbow (Comsol)

ME 475/675 Introduction to Combustion

Date of download: 12/19/2017 Copyright © ASME. All rights reserved.

Date of download: 12/23/2017 Copyright © ASME. All rights reserved.

KINEMATICS 1. A nozzle is so shaped that the velocity of flow along the centre line changes linearly from 1.5 m/s to 15 m/s in a distance of m. Determine.

From: Modeling of Particle-Laden Cold Flow in a Cyclone Gasifier

The other main type of energy-producing hydroturbine is the

E. Papanikolaou, D. Baraldi

Internal Flow: General Considerations

 More Fluids  November 30,  More Fluids  November 30, 2010.

Boundary Layer Correction

Presentation transcript:

2D Free Jet Simulations (FLUENT) Oct. 31 2013 Yan Zhan Oct. 31, 2013

Outline 2D Laminar Plane Jet 2D Laminar Round Jet Theoretical Solutions Numerical Calculations (FLUENT code) Mean Stream Velocity Jet Half Width Momentum Thickness 2D Laminar Round Jet

2D Laminar Plane Jet ― Theoretical Solutions Air emerges into a still air from a 2D slot at x=0 Constant momentum flux (J) at any cross section Spread at constant pressure (P = 1 bar) Red = 400 ( ux = 0.64 m/s） Temperature = 300 K ρ = 1.225 kg/m3；ν = 1.46073×10-5 m2/s； Fig.1 Typical free 2D laminar plane jet streamline pattern Laminar Plane Jet (Schlichting 1933)

2D Laminar Plane Jet ― Numerical Calculations Inlet velocity Wall Pressure outlet Symmetrical axis Interior Halved geometry

2D Laminar Plane Jet ― Numerical Calculations Centerline Velocity( ) 𝒙 𝒖 𝒄 0.01 0.6388123 0.05 0.63888186 0.1 0.63220511 0.2 0.6074034 0.3 0.5727235 0.4 0.537284 0.5 0.5115343 0.6 0.49355775 0.7 0.477681 0.8 0.4557375 0.9 0.44144434 White’s book PDF page277 (J = 0.0051)

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 20 x/d = 10 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 30 x/d = 40 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 60 x/d = 50 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 70 x/d = 80 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 90 x/d = 100 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Jet Half Width ( ) 𝒙/d 𝒓 𝟏/𝟐 /d 1 0.539526 5 0.596278 10 0.65713 20 0.733453 30 0.836392 40 0.925598 50 1.00985 60 1.15413 70 1.21262 80 1.32187 90 1.74276 100 2.17414 Half Width: Radial distance from the axis to the position at the which the absolute value of the axial velocity drops to half its value on the axis. The plot shows the relationship between jet half width and distance from the jet nozzle.

2D Laminar Plane Jet ― Numerical Calculations Jet Self-similarity The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Momentum Thickness ( ) 𝒙 𝜽 0.01 1.97590e-4 0.05 9.08948e-4 0.1 1.67433e-3 0.2 2.57365e-3 0.3 4.28040e-3 0.4 3.33453e-3 0.5 4.26769e-3 0.6 5.51115e-3 0.7 6.22347e-3 0.8 7.93727e-3 0.9 1.01272e-2 1.0 9.29760e-3 Plot shows the changes in momentum thickness at different locations downstream of the jet.

Outline 2D Laminar Plane Jet 2D Laminar Round Jet Theoretical Solutions Numerical Calculations (FLUENT code) Mean Stream Velocity Jet Half Width Momentum Thickness 2D Laminar Round Jet

2D Laminar Round Jet ― Theoretical Solutions Air emerges into a still air from a circular orifice at x=0 Constant momentum flux (J) at any cross section Spread at constant pressure (P = 1 bar) Red = 400 ( u = 0.64 m/s） Temperature = 300 K ρ = 1.16 kg/m3；ν = 1.6×10-5 m2/s； Narrow Axisymmetric Jet (Schlichting 1933)

2D Laminar Round Jet ― Numerical Calculations Inlet velocity Wall Pressure outlet Axial symmetirc Interior Halved geometry

2D Laminar Round Jet ― Numerical Calculations Centerline Velocity( ) 𝒙 𝒖 𝒄 0.01 0.63920647 0.05 0.63778848 0.1 0.610317 0.2 0.5230199 0.3 0.4403066 0.4 0.372688 0.5 0.32611621 0.6 0.2895635 0.7 0.260005 0.8 0.2357024 0.9 0.2153695

2D Laminar Round Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 20 x/d = 10 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 30 x/d = 40 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 60 x/d = 50 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 70 x/d = 80 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Plane Jet ― Numerical Calculations Mean Stream Velocity ( ) x/d = 90 x/d = 100 The plot shows the flow profile along the radial direction of the flow.

2D Laminar Round Jet ― Numerical Calculations Jet Half Width ( ) 𝒙/d 𝒓 𝟏/𝟐 /d 1 0.462644 5 0.397387 10 0.603436 20 0.691654 30 0.822712 40 0.977359 50 1.07118 60 1.20262 70 1.33417 80 1.46478 90 1.59214 100 1.69765 Half Width: Radial distance from the axis to the position at the which the absolute value of the axial velocity drops to half its value on the axis. The plot shows the relationship between jet half width and distance from the jet nozzle.

2D Laminar Round Jet ― Numerical Calculations Jet Self-similarity The plot shows the flow profile along the radial direction of the flow.

2D Laminar Round Jet ― Numerical Calculations Momentum Thickness ( ) 𝒙 𝜽/𝐝 1 4.879917e-2 5 1.429468e-1 10 2.109622e-1 20 2.877028e-1 30 3.523778e-1 40 4.257012e-1 50 4.583403e-1 60 5.047484e-1 70 5.455564e-1 80 5.808257e-1 90 6.108572e-1 100 6.309687e-1 Plot shows the changes in momentum thickness at different locations downstream of the jet.