نتایج جستجو برای: thermal flow

تعداد نتایج: 683554  

2010
A. S. Donahue S. S. P. Shen

A forced Korteweg–de Vries (fKdV) equation can be used to model the surface wave of a twodimensional water flow over a bump when the upstream Froude number is near one. The fKdV model typically has four types of solutions: sub-critical cnoidal waves, sub-critical hydraulic fall, transcritical upstream soliton radiation, and supercritical multiple solitary waves. This paper provides a numerical ...

2012
David E. Hardt Nicolas Hadjiconstantinou Gregg Radtke

Knudsen compressors are devices without any moving parts that use the nanoscale phenomenon of thermal transpiration to pump or compress a gas. Thermal transpiration takes place when a gas is in contact with a solid boundary along which a temperature gradient exists. If the characteristic length scale is on the order of, or smaller than, the molecular mean free path, then the gas flows from cold...

1997
Glenn J. Veeder Dennis L. Matson Torrence V. Johnson Diana L. Blaney

We report the following results from a decade of infrared radiometry of Io: (1) The average global heat flow is more than -2.5 W rn”z, (2) large warm (s200 K) volcanic regions dominate the global heat flow, (3) small high-temperature (> 300 K) “hotspots” contribute little to the average heat flow, (4) thermal anomalies on the leading hemisphere contribute about half of the heat flow, (5) a subs...

Journal: :The Proceedings of Mechanical Engineering Congress, Japan 2020

Journal: :Clinical Chemistry 2017

2004
Jack Chen Jonathan Engel Max Chang Chang Liu

Micromachined resistors are thermal transducers that can be used to measure air and water flow rate. For the thermal resistor to function as a flow sensor, the electrical resistivity must be a strong function of temperature it must be sufficiently thermally isolated from the supports and substrate. The thermal resistor can be made of a metal or doped semiconductor and can thermally isolated by ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2009
Dmitry A Nedosekin Werner Faubel Mikhail A Proskurnin Ute Pyell

The possibility of thermal lensing of dynamically emerging light-absorbing layers at cell surfaces was investigated. Analyte accumulation at a cell surface determines long-term changes in the thermal-lens signal that was used as a source of analytical information to enhance sensitivity of thermal lensing. Considering the rate of accumulation as an additional analytical signal, we achieved a thr...

Journal: :international journal of advanced design and manufacturing technology 0
hamidreza goshayeshi amirreza mamouri

cooling towers are widely used in most industrial units to reject waste heat to the atmosphere. this paper deals with an experimental analysis of heat and mass transfer phenomena between water and air by direct contact in a cooling tower. the tower is filled with 6 type packing. in this study temperature and pressure drop and tower characteristics was used in determining experimentally the ther...

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