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Cfd model for jet fan ventilation systems
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The article was published on 2000-01-01 and is currently open access. It has received 23 citations till now. The article focuses on the topics: Jet (fluid).read more
Citations
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Journal ArticleDOI
Calculation and design of tunnel ventilation systems using a two- scale modelling Approach
Francesco Colella,Guillermo Rein,Romano Borchiellini,Ricky O Carvel,Jose L. Torero,Vittorio Verda +5 more
TL;DR: In this paper, a multi-scale approach is proposed to model tunnel flows at ambient conditions (i.e. cold flow) in order to provide detailed local flow conditions, where required, with a significant reduction in the overall computational time.
Journal ArticleDOI
Multiscale modeling of transient flows from fire and ventilation in long tunnels
TL;DR: The multiscale model couples dynamically a Computational Fluid Dynamics solver with a simple 1D network model, allowing for a more rational use of the computational resources without loss of accuracy.
Journal ArticleDOI
A method for design of smoke control of urban traffic link tunnel (UTLT) using longitudinal ventilation
TL;DR: In this paper, a generic design procedure to control the smoke flow in a UTLT with longitudinal forced ventilation is proposed with the relevant design criteria, where the ventilation network in an urban traffic link tunnel (UTLT) is divided into three characterized regions: smoke discharge branches, smoke-prevention branches upstream of the fire, and the smoke prevention branches downstream of the smoke discharge branch, where a simple one-dimensional calculation approach can be used to develop an appropriate ventilation system, and to solve the flow rates for the various branches.
Journal ArticleDOI
A Novel Multiscale Methodology for Simulating Tunnel Ventilation Flows During Fires
TL;DR: In this paper, a simple 1D network approach is used to model tunnel regions where the flow is fully developed (far field), and a detailed CFD representation is used where flow conditions require 3D resolution (near field).
Journal ArticleDOI
The use of impulse ventilation for smoke control in underground car parks
TL;DR: In this article, the interaction between the fire ceiling jet and the flow driven by jet fans is studied using CFD simulations and a sensitivity analysis considering important parameters such as position and intensity of fire source, transversal distance between jet fans, restriction of exhaust flow rate and dimension of car park exhaust opening is carried out and rules for the design of 50N thrust jet fans are deduced.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Book
Combustion fundamentals of fire
TL;DR: In this article, G. Cox the sold phase, C. Fernandez-Pello bouyant fire plumes, E.E. Zukoski turbulent diffusion flames, J.B. Moss the growth of fire, P.H. Thomas compartment fire modelling, G Cox fire chemistry, R.F. Simmons.
Journal ArticleDOI
A Generalization of the Additive Correction Methods for the Iterative Solution of Matrix Equations
Antonin Settari,Khalid Aziz +1 more
TL;DR: A general formulation of the additive correction methods of Poussin [4] and Watts [7] is presented in this paper, which is applied to the solution of finite difference equations resulting from elliptic and parabolic partial differential equations.