scholarly journals Appendix G Nonlinear Numerical Model

2020 ◽  
pp. 461-462
Keyword(s):  
Numerical Model ◽  
Nonlinear Numerical Model

A numerical model of the air flow above water waves. Part 2

1977 ◽  
Vol 82 (2) ◽  
pp. 349-369 ◽  
Author(s):  
P. R. Gent
Keyword(s):  
Energy Transfer ◽  
Numerical Model ◽  
Water Waves ◽  
Air Flow ◽  
Field Observations ◽  
Transfer Rates ◽  
Fractional Rate ◽  
Theoretical Predictions ◽  
The Waves ◽  
Nonlinear Numerical Model

Further results from the nonlinear numerical model of the air flow in a deep turbulent boundary layer above water waves described in Gent & Taylor (1976) are presented. The results are calculated with the surface roughness z0 both constant and varying with position along the wave. With the form used when z0 varies, the fractional rate |ζ| of energy transfer per radian advance in phase due to the working of the pressure forces is larger than for z0 constant both when the transfer is from wind to waves and when it is from waves to wind. The latter case occurs when the waves are travelling faster than, or against, the wind. The energy transfer rates are compared with other theoretical predictions and with recent field observations.

A Novel Application of the Thermal Probe: Nonlinear and Phase Change Problems

2015 ◽  
Vol 137 (10) ◽  
Author(s):  
M. H. Adjali
Keyword(s):  
Thermal Conductivity ◽  
Parameter Estimation ◽  
Numerical Model ◽  
Phase Change ◽  
Estimation Technique ◽  
Thermal Probe ◽  
Temperature Dependent ◽  
Agar Gel ◽  
Nonlinear Numerical Model ◽  
Thermal Conductivities

This paper reports on a new application of the thermal probe in nonlinear systems. Whereas the thermal probe has been originally developed to determine the thermal conductivity in linear cases (where the thermophysical properties are considered independent of the temperature), the method used here exploits a direct nonlinear numerical model associated with a parameter estimation technique to determine temperature dependent thermal conductivities. It has been applied to a water-agar gel during phase change and the thermal conductivities within the corresponding temperature interval could be determined.

Evaluation of Piled Raft Performance Using a Verified 3D Nonlinear Numerical Model

2017 ◽  
Vol 35 (4) ◽  
pp. 1831-1845 ◽  
Author(s):  
Ahmed M. Alnuaim ◽  
Hany El Naggar ◽  
M. Hesham El Naggar
Keyword(s):  
Numerical Model ◽  
Piled Raft ◽  
Nonlinear Numerical Model
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