The critical role of computational fluid dynamics in rotary-wing aerodynamics

1986 ◽  
Author(s):  
S. DAVIS ◽  
I.-C. CHANG
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Critical Role ◽  
Rotary Wing ◽  
Wing Aerodynamics

Thermal Modeling of a Liquid-Cooled PM Traction Motor

2003 ◽  
Author(s):  
Edward Jih ◽  
Thomas Abraham ◽  
Stephen Stella ◽  
Roy Davis ◽  
Bert Dinger ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Permanent Magnet ◽  
Electric Motor ◽  
Hybrid Electric Vehicle ◽  
Effective Properties ◽  
Copper Wire ◽  
Critical Role ◽  
Traction Motor ◽  
Dynamics Analyses

The electric motor plays a critical role for the applications of the Hybrid Electric Vehicle and Fuel Cell Electric Vehicel. It is also well known that thermal constraints represent one of the main limitations in the performance of the electric motor. For example, the electric motor will be short-circuited if the insulation coatings of the copper wire bundles fail. Furthermore, the performance of the permanent magnet electric motor reduces significantly as the rotor magnet temperature increases. In this study, a series of Computational Fluid Dynamics analyses were performed for the design of a liquid-cooled permanent magnet electric motor to achieve better thermal performance. Several thermal tests of a partial permanent magnet traction motor assembly (stator and housing only) were also performed to determine effective properties of the stator slot and thermal contact resistance between stator and housing that may vary due to the manufacturing process. A simplified thermal network model of this system was established from the Computational Fluid Dynamics analyses. Then the critical heat transfer path of this system was identified.

Wind-Tunnel Interference Effects on Delta Wing Aerodynamics Computational Fluid Dynamics Investigation

2005 ◽  
Vol 42 (1) ◽  
pp. 189-198 ◽  
Author(s):  
M. R. Allan ◽  
K. J. Badcock ◽  
G. N. Barakos ◽  
B. E. Richards
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Tunnel ◽  
Delta Wing ◽  
Interference Effects ◽  
Wing Aerodynamics

Computational Fluid Dynamics Modeling of Oxy-Fuel Flames: The Role of Soot and Gas Radiation

2012 ◽  
Vol 26 (5) ◽  
pp. 2786-2797 ◽  
Author(s):  
Stefan Hjärtstam ◽  
Robert Johansson ◽  
Klas Andersson ◽  
Filip Johnsson
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Dynamics Modeling ◽  
Computational Fluid Dynamics Modeling ◽  
Gas Radiation

scholarly journals Using Computational Fluid Dynamics to Evaluate the Role of Air Purification in Reducing Fallow Time in Dentistry

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Raghava N ◽  
Vidovic B
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Air Purification ◽  
Current Recommendation ◽  
Infection Transmission ◽  
Airborne Infection ◽  
Dental Professionals

In dentistry, fallow time is a period which allows for airborne pathogens to settle out of the air and mitigate the risk of airborne infection transmission to dental professionals and staff. The current recommendation is a one-hour period.

The Role of CFD in Preliminary Aerospace Design (Keynote)

2003 ◽  
Author(s):  
Antony Jameson
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Design Process ◽  
Design Problem ◽  
Development Project ◽  
Design Team ◽  
Aerodynamic Design ◽  
Trade Offs ◽  
Dynamics Analyses

This paper discusses the role that computational fluid dynamics plays in the design of aircraft. An overview of the design process is provided, covering some of the typical decisions that a design team addresses within a multi-disciplinary environment. On a very regular basis trade-offs between disciplines have to be made where a set of conflicting requirements exists. Within an aircraft development project, we focus on the aerodynamic design problem and review how this process has been advanced, first with the improving capabilities of traditional computational fluid dynamics analyses, and then with aerodynamic optimizations based on these increasingly accurate methods.

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