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  1. cambridge.org

    A thermal transpiration flow through a single rectangular micro-channel was studied experimentally for various gas species, including all rare gases, in order to investigate the influence of gas species on the flow properties. ... Computational investigation and parametrization of the pumping effect in temperature-driven flows through long ...
  2. gradient driven flows in a rectangular channel Ricardo Brancher, Martin Johansson, Pierre Perrier, Irina Graur To cite this version: Ricardo Brancher, Martin Johansson, Pierre Perrier, Irina Graur. Measurements of pressure gradient and temperature gradient driven flows in a rectangular channel. 2022. ￿hal-03652736￿
  3. cambridge.org

    The objective of this experimental investigation is to characterize the gas-surface interaction under different flow conditions. Therefore, the mass flow rates driven by a pressure gradient under isothermal conditions and by only a temperature gradient under constant pressure conditions are measured in the same microchannel for five different gases: helium, neon, nitrogen, argon and krypton.
  4. semanticscholar.org

    Abstract A thermal transpiration flow through a single rectangular micro-channel was studied experimentally for various gas species, including all rare gases, in order to investigate the influence of gas species on the flow properties. The final equilibrium flow characteristics and relaxation time of the pressure variation were evaluated as functions of the rarefaction parameter. The thermal ...
  5. researchgate.net

    The gas flow through this channel is generated by the pressure and/or temperature gradient. The method is based on the results obtained previously on the basis of the kinetic equation and it ...
  6. sciencedirect.com

    As it was proposed previously [13], [35], the mass flow rate, M ˙, through a channel driven by pressure and temperature gradients, d p / d z and d T / d z, respectively, is expressed in the form (1) M ˙ = S p v (− G p (δ) a p d p d z + G T (δ) a T d T d z), where the characteristic dimension, a, of a tube cross-section is the tube radius ...
  7. researchgate.net

    A thermal transpiration flow through a single rectangular micro-channel was studied experimentally for various gas species, including all rare gases, in order to investigate the influence of gas ...
  8. user.engineering.uiowa.edu

    C4.1 In a certain medical application, water at room temperature and pressure flows through a rectangular channel of length L 10 cm, width s 1 cm, and gap thickness b 0.3 mm.The volume flow is sinusoidal, with amplitude Qo 0.5 ml/s and frequency f o20 Hz, that is, Q Q sin(2 f t). (a) Calculate the maximum Reynolds number Re Vb/ , based on maximum average velocity
  9. inside a micro-tube and a micro-rectangular channel [13{15]. They found that the unsteady pressure developments in the two reservoirs at the micro-channel ends can be well approximated with two exponential functions. They measured the slops of initial pressure changes inside the two reservoirs for
  10. cambridge.org

    Measurements of the thermal creep flow through a single rectangular microchannel connected to two tanks maintained initially at the same pressure, but at different temperatures, are carried out for five noble gas species, over a large range of pressure and for two temperature differences between the tanks.

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