Quite recently, the author has shown that the average thermal gap in the heated channel (the wall temperature minus the average temperature of the coolant) was tightly connected with the thermodynamic efficiency of a theoretical reversible engine placed in this thermal gap. In this work, whereas ...
In a supersonic flow, because the local flow velocity is greater than the speed of sound, disturbances created at some point in the flow cannot work their way upstream (in contrast to subsonic flow). This property is one of the most significant physical differences between subsonic and super...
Since fluid flow problems usually treat a fluid crossing the boundaries of a control volume, the control volume approach is referred to as an “open” system analysis, which is similar to the concepts studied in thermodynamics. There are special cases in the nuclear field where fluid does not ...
that cooled from thermal instabilities in the ICM. In principle both modes can work in the feedback cycle (e.g.,Gaspari et al., 2011). WhileBondi accretionappears to be energetically plausible in cooling flows in elliptical galaxies (e.g.,Allen et al., 2006; Narayan and Fabian, 2011; ...
This paper presents results of work that has been done in developing use of the Second Law of Thermodynamics and methods such as exergy and thermoeconomics into a system-level analysis and design methodology. The application of these methods to the design of a complete flight vehicle is ...
Fatty Acid Flip-Flop in Phospholipid Bilayers Is Extremely Fast This work extends the time resolution of this assay into the millisecond time range by use of stopped flow fluorometry. In small unilamellar vesicles (... F Kamp,D Zakim,F Zhang,... - 《Biochemistry》 被引量: 638发表: 1995年...
In the present work the problem of the one dimensional time dependent viscous compressible gas flow excited by a small external time dependent spaceand time periodic force is considered within the framework of the Navier Stokes equations ... V. Zharov,O. Rovenskaya 被引量: 0发表: 2008年 4012...
If the compressor efficiency is 0.75, what is the work required and what are the properties of the discharge stream? Solution 7.8 For saturated steam at 100 kPa, For isentropic compression to 300 kPa, Interpolation in the tables for superheated steam at 300 kPa shows that steam with this ...
We shall therefore attempt to construct an example of constitutive equations for interphase heat exchange in such a way that QðaÞ ¼ Qb ðaÞðhð1Þ; . . .Þ, X QðaÞ ¼ ÀW ; a X QðaÞ a hðaÞ P 0 ð26Þ where W represents the work of...
1 The main flow paths were originally suggested by Hubbert2 in 1962, who subsequently quantified all of them in 1971.3 Some of these values have been revised to include later work, but it must be appreciated that all the values are approximate. Sign in to download full-size image Figure ...