Porous media heat exchangers for cooling of high-power optical components

1995 ◽  
Vol 34 (2) ◽  
pp. 335 ◽  
Author(s):  
John H. Rosenfeld
Keyword(s):  
Porous Media ◽  
High Power ◽  
Heat Exchangers ◽  
Optical Components

TOPOLOGY ENHANCEMENT OF PLATE AND FIN HEAT EXCHANGERS USING A DISCRETE POROUS MEDIA SIMULATION APPROACH

2019 ◽  
Author(s):  
Samer Wakim ◽  
Maroun Nemer ◽  
B. Zeghondy ◽  
Boutros Ghannam ◽  
C. Bouallou
Keyword(s):  
Porous Media ◽  
Heat Exchangers ◽  
Simulation Approach

Metrology of thin film optical components for high power continuous wave lasers

2021 ◽  
Author(s):  
Camille Petite ◽  
Antonin Moreau ◽  
Hélène Krol ◽  
Catherine Grèzes-Besset ◽  
Julien Lumeau ◽  
...  
Keyword(s):  
Thin Film ◽  
High Power ◽  
Continuous Wave ◽  
Optical Components

Diamond optical components for high-power and high-energy laser applications

2015 ◽  
Author(s):  
Eugene Anoikin ◽  
Alexander Muhr ◽  
Andrew Bennett ◽  
Daniel Twitchen ◽  
Henk de Wit
Keyword(s):  
High Power ◽  
High Energy ◽  
Laser Applications ◽  
Optical Components ◽  
Energy Laser ◽  
High Energy Laser

High power density two-phase cooling in microchannel heat exchangers

2019 ◽  
Vol 148 ◽  
pp. 1271-1277 ◽  
Author(s):  
Beomjin Kwon ◽  
Nicholas I. Maniscalco ◽  
Anthony M. Jacobi ◽  
William P. King
Keyword(s):  
Power Density ◽  
High Power ◽  
Heat Exchangers ◽  
High Power Density ◽  
Two Phase ◽  
Two Phase Cooling

Monolithic optical components for splitting of high-power beams

2012 ◽  
Author(s):  
M. Jarczynski ◽  
T. Mitra ◽  
M. Ivaneko ◽  
L. Aschke ◽  
C. Wächter ◽  
...  
Keyword(s):  
High Power ◽  
Optical Components

Metrology of large optical components for high power lasers

2003 ◽  
Author(s):  
Jean-Christophe Poncetta ◽  
Vincent Beau ◽  
Jerome Daurios ◽  
Gael Gaborit ◽  
Genevieve Chabassier
Keyword(s):  
High Power ◽  
Optical Components ◽  
High Power Lasers

Porous Medium Interconnector Effects on the Thermohydraulics of Near-Compact Heat Exchangers Treated as Porous Media

2006 ◽  
Vol 129 (3) ◽  
pp. 273-281 ◽  
Author(s):  
K. Sumithra Raju ◽  
Arunn Narasimhan
Keyword(s):  
Porous Medium ◽  
Porous Media ◽  
Heat Exchangers ◽  
Fluid Transport ◽  
Energy Transport ◽  
Metal Foam ◽  
Volume Ratio ◽  
Numerical Data ◽  
Darcy Number ◽  
Compact Heat Exchangers

A novel approach of treating near-compact heat exchangers (NCHX) (surface to volume ratio, α=100-300m2∕m3 with hydraulic diameter DM∼6mm) as a “global” porous media, whose thermohydraulic performance is being influenced by the presence of “local” tube-to-tube porous medium interconnectors, connecting the in-line arrangement of tubes (D=2mm) having square pitch of XT=XL=2.25, is investigated in this study using numerical methods. The thermohydraulics of the global porous media (NCHX) are characterized by studying the effect of transverse thickness (δ) and permeability (represented by Dai) of the local metal foam type porous medium interconnectors on the global heat transfer coefficient (Nu) and nondimensional pressure drop (ξ). The fluid transport in the porous medium interconnectors is governed by the Brinkman–Darcy flow model while the volume averaged energy equation is used to model energy transport, with the tube walls kept at constant temperature and exchanging heat with the cooling fluid having Pr=0.7 under laminar flow (10<Re<100). For the chosen NCHX configuration, ξ and Nu increases for an increase in Re and also with an increase in the thickness (δ) of the interconnecting porous medium. However, as the local Darcy number (Dai) of the interconnecting porous medium increases, the ξ decreases but the Nu increases. Treating the heat exchanger as a global porous media this result translates to an increase in the ξ and Nu as the global permeability (represented by Dag) decreases, where the decrease in Dag is because of either an increase in δ or a decrease in Dai. Separate correlations predicting ξ and Nu as a function of Re and Dag (which in turn is correlated to δ and Dai) have been developed for the chosen NCHX configuration, both of which predict the numerical data with ±20% accuracy.

Sign in / Sign up

Export Citation Format

Share Document