Analytic and CFD Models for Transient Outburst Flow

AbstractAn analytic model (AM) describes the dynamical behavior of a Newtonian fluid that is suddenly released to the atmosphere from a pressurized vessel. The discharge process is a very fast transient phenomenon in which the liquid transits from rest to a highly turbulent motion, constituting a tw...

Full description

Saved in:
Bibliographic Details
Published in:Journal of hydraulic engineering (New York, N.Y.) N.Y.), 2019-03, Vol.145 (3)
Main Authors: García García, F. Javier, Fariñas Alvariño, Pablo
Format: Article
Language:English
Subjects:
Aerodynamics
Atmospheric models
Computational fluid dynamics
Computer applications
Computer simulation
Deceleration
Detached eddy simulation
Dynamics
Fluid dynamics
Fluid flow
Hydrodynamics
Multiphase flow
Newtonian fluids
Profiles
Simulation
Technical Papers
Transits
Turbulence
Turbulence models
Two phase flow
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractAn analytic model (AM) describes the dynamical behavior of a Newtonian fluid that is suddenly released to the atmosphere from a pressurized vessel. The discharge process is a very fast transient phenomenon in which the liquid transits from rest to a highly turbulent motion, constituting a two-phase flow with a liquid–air interface. The AM has a number of parameters that can be adjusted to conform to experimental or simulation data. This AM is then used to assess the ability of some relevant computational fluid dynamics (CFD) turbulence models to simulate the fast transient behavior described by the AM. The detached eddy simulation (DES) k−ω shear-stress-transport with scale-adaptive-simulation (SSTSAS) turbulence model provides an acceptable agreement with the AM because it can reproduce the intense wall friction generated in the transient motion. The CFD results suggest that deceleration plays a very prominent role in generating turbulence near the wall. The cross-section velocity and turbulence fields profiles for the CFD model are also discussed.
ISSN:0733-9429
1943-7900
DOI:10.1061/(ASCE)HY.1943-7900.0001562