CFD Modeling of Hot-Channel for Potential High-Power Configuration of Missouri S&T Reactor

2020 ◽  
Author(s):  
A. Alajo ◽  
T. Alhuzaymi ◽  
J. Schlegel
Keyword(s):  
High Power ◽  
Cfd Modeling ◽  
Power Configuration

CFD Modeling of Hot-Channel for Potential High-Power Configuration of Missouri S&T Reactor

2020 ◽  
Author(s):  
A. Alajo ◽  
T. Alhuzaymi ◽  
J. Schlegel
Keyword(s):  
High Power ◽  
Cfd Modeling ◽  
Power Configuration

Improved Computational Fluid Dynamics Model for Open-Aisle Air-Cooled Data Center Simulations

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Waleed A. Abdelmaksoud ◽  
Thong Q. Dang ◽  
H. Ezzat Khalifa ◽  
Roger R. Schmidt
Keyword(s):  
High Power ◽  
Data Center ◽  
Large Scale ◽  
Source Model ◽  
Cfd Modeling ◽  
Small Data ◽  
Cfd Model ◽  
It Industry ◽  
Cfd Models ◽  
Tile Flow

There is a need in the IT industry for CFD models that are capable of accurately predicting the thermal distributions in high power density open-aisle air-cooled data centers for use in the design of these facilities with reduced cooling needs. A recent detailed evaluation of a small data center cell equipped with one high power rack using current CFD practice showed that the CFD results were not accurate. The simulation results exhibited pronounced hot/cold spots in the data center while the test data were much more diffused, indicating that the CFD model under-predicted the mixing process between the cold tile flow and the hot rack exhaust flow with the warm room air. In this study, a parametric study was carried out to identify CFD modeling issues that contributed to this error. Through a combined experimental and computational investigation, it was found that the boundary condition imposed at the perforated surfaces (e.g., perforated tiles and rack exhaust door) as fully open surfaces was the main source of error. This method enforces the correct mass flux but the initial jet momentum is under-specified. A momentum source model proposed for these perforated surfaces is found to improve the CFD results significantly. Another CFD modeling refinement shown to improve CFD predictions is the inclusion of some large-scale geometrical features of the perforated surfaces (e.g., lands/gaps) in the CFD model, but this refinement requires the use of grids finer than those typically used in practice.

Hot-Channel and Burnup Analysis for Potential High-Power Configuration of Missouri S&T Reactor

2019 ◽  
Author(s):  
A. Alajo ◽  
T. Alhuzaymi
Keyword(s):  
High Power ◽  
Power Configuration

scholarly journals Numerical Analysis on Thermal Conductivity of Vapor Chamber Using an Iterative Approach

10.29007/wt1h ◽  
2018 ◽  
Author(s):  
Deepak Jani ◽  
Mukesh Keshwani ◽  
Amarish Badgujar ◽  
Ajit Chaudhari
Keyword(s):  
High Power ◽  
High Performance ◽  
Heat Sinks ◽  
Junction Temperature ◽  
Cfd Modeling ◽  
Operating Efficiency ◽  
Vapor Chamber ◽  
Power Devices ◽  
Performance Requirements ◽  
Technological Developments

Technological developments have resulted in a growing demand for high power electronic devices. Although these high power devices meet the high performance requirements, they also generate a very large amount of heat which adversely affects their operating efficiency. Most part of the heat within a package is generated at the chip and hence it is important to keep junction temperature as low as possible. This is commonly achieved by using heat sinks mounted directly on top of the package. Using a vapor chamber can reduce thermal resistance by better spreading heat across the heat sink base. This work presents a parametric study of vapor chambers as heat spreaders and discusses the merits of using this technology especially in high power devices through CFD modeling. Iterative method is used to finalize the value of Ks and Kl by considering the orthotropic approach.

Dynamic Modeling and Wear-Based Remaining Useful Life Prediction of High Power Clutch Systems

2005 ◽  
Vol 48 (2) ◽  
pp. 208-217 ◽  
Author(s):  
Matthew Watson ◽  
Carl Byington ◽  
Douglas Edwards ◽  
Sanket Amin
Keyword(s):  
Dynamic Modeling ◽  
High Power ◽  
Life Prediction ◽  
Remaining Useful Life ◽  
Useful Life

Less Power, Greater Conflict

2018 ◽  
Vol 49 (1) ◽  
pp. 47-62 ◽  
Author(s):  
Petra C. Schmid
Keyword(s):  
Low Power ◽  
High Power ◽  
Goal Pursuit ◽  
Goal Conflict ◽  
Personal Goals ◽  
Multiple Goals ◽  
Objective Performance ◽  
The Future ◽  
The Way

Abstract. Power facilitates goal pursuit, but how does power affect the way people respond to conflict between their multiple goals? Our results showed that higher trait power was associated with reduced experience of conflict in scenarios describing multiple goals (Study 1) and between personal goals (Study 2). Moreover, manipulated low power increased individuals’ experience of goal conflict relative to high power and a control condition (Studies 3 and 4), with the consequence that they planned to invest less into the pursuit of their goals in the future. With its focus on multiple goals and individuals’ experiences during goal pursuit rather than objective performance, the present research uses new angles to examine power effects on goal pursuit.

High-power diode lasers

AccessScience ◽  
2015 ◽  
Keyword(s):  
High Power ◽  
Diode Lasers ◽  
Power Diode

Cooperation in multicultural negotiations: How the cultures of people with low and high power interact.

2016 ◽  
Vol 101 (5) ◽  
pp. 721-730 ◽  
Author(s):  
Shirli Kopelman ◽  
Ashley E. Hardin ◽  
Christopher G. Myers ◽  
Leigh Plunkett Tost
Keyword(s):  
High Power

Powerful exceptions: Women's reactions to high power mindsets

2014 ◽  
Author(s):  
Andrea C. Vial ◽  
Jaime L. Napier
Keyword(s):  
High Power

Behavioral Effects of Exposure to the Tempo High-Power Microwave System

1988 ◽  
Author(s):  
B. Jon Klauenberg ◽  
James H. Merritt ◽  
David N. Erwin
Keyword(s):  
High Power ◽  
Behavioral Effects ◽  
High Power Microwave ◽  
Microwave System ◽  
Power Microwave
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