scholarly journals Errata to ?The effect of an axial temperature gradient on the steady motion of a large droplet in a tube? by S. K. Wilson

1996 ◽  
Vol 30 (6) ◽  
pp. 713-713
Keyword(s):  
Temperature Gradient ◽  
Steady Motion ◽  
Large Droplet ◽  
Axial Temperature Gradient ◽  
Axial Temperature

Controlling the axial temperature gradient in inductively heated Czochralski systems

2003 ◽  
Vol 38 (1) ◽  
pp. 42-46 ◽  
Author(s):  
S. Ganschow ◽  
P. Reiche ◽  
M. Ziem ◽  
R. Uecker
Keyword(s):  
Temperature Gradient ◽  
Axial Temperature Gradient ◽  
Axial Temperature

Amplification of energy flux of nonlinear acoustic waves in a gas-filled tube under an axial temperature gradient

2002 ◽  
Vol 456 ◽  
pp. 377-409 ◽  
Author(s):  
N. SUGIMOTO ◽  
K. TSUJIMOTO
Keyword(s):  
Boundary Layer ◽  
Temperature Gradient ◽  
Energy Flux ◽  
Acoustic Waves ◽  
Wave Equations ◽  
Main Flow ◽  
Nonlinear Wave Equations ◽  
Axial Temperature Gradient ◽  
Axial Temperature ◽  
Nonlinear Acoustic

This paper considers nonlinear acoustic waves propagating unidirectionally in a gas-filled tube under an axial temperature gradient, and examines whether the energy flux of the waves can be amplified by thermoacoustic effects. An array of Helmholtz resonators is connected to the tube axially to avoid shock formation which would otherwise give rise to nonlinear damping of the energy flux. The amplification is expected to be caused by action of the boundary layer doing reverse work, in the presence of the temperature gradient, on the acoustic main flow outside the boundary layer. By the linear theory, the velocity at the edge of the boundary layer is given in terms of the fractional derivatives of the axial velocity of the gas in the acoustic main flow. It is clearly seen how the temperature gradient controls the velocity at the edge. The velocity is almost in phase with the heat flux into the boundary layer from the wall. With effects of both the boundary layer and the array of resonators taken into account, nonlinear wave equations for unidirectional propagation in the tube are derived. Assuming a constant temperature gradient along the tube, the evolution of compression pulses is solved numerically by imposing the initial profiles of both an acoustic solitary wave and of a square pulse. It is revealed that when a positive gradient is imposed, the excess pressure decreases while the particle velocity increases and that the total energy flux can indeed be amplified if the gradient is suitable.

Behavior of the Melt in the Vertical Bridgman Method with a Low Axial Temperature Gradient

2018 ◽  
Vol 12 (2) ◽  
pp. 261-268
Author(s):  
G. N. Kozhemyakin ◽  
V. K. Artemyev ◽  
V. I. Strelov ◽  
V. S. Sidorov ◽  
E. N. Korobeynikova
Keyword(s):  
Temperature Gradient ◽  
Bridgman Method ◽  
Axial Temperature Gradient ◽  
Vertical Bridgman Method ◽  
Axial Temperature ◽  
Vertical Bridgman

Experimental investigation on circumferential and axial temperature gradient over fuel channel under LOCA

2013 ◽  
Vol 50 (6) ◽  
pp. 737-746 ◽  
Author(s):  
Ashwini Kumar Yadav ◽  
Ravi kumar ◽  
Akhilesh Gupta ◽  
Barun Chatterjee ◽  
Deb Mukhopadhyay ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Temperature Gradient ◽  
Fuel Channel ◽  
Axial Temperature Gradient ◽  
Axial Temperature
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