In the present study, analytical solutions for thermally developing flows in porous media under local thermal non-equilibrium (LTNE) condition are derived for different fundamental models. The analytical solutions are validated by comparison with the numerical results. Based on the analytical solutions, the local Nusselt number is obtained, and the dimensionless thermal entry length nc is predi...

We are developing a finite element program for oil and gas reservoir simulation based on Biot’s poroelastic theory, where a simultaneous solution is sought for both the pore pressure and strain in the solid phase. Several 2-D and 3-D cases are presented, which are compared with analytical solutions for verification of this approach. We have also applied this method to simulate surface subsidenc...

Thermoelectric power generators are used to convert heat into electricity. Like any other heat engine, the performance of a thermoelectric generator increases as the temperature difference on the sides increases. It is generally assumed that as more heat is forced through the thermoelectric legs, their performance increases. Therefore, insulations are typically used to minimize the heat losses ...

This article introduces the concept of Genetic Programming (GP), which is the application of the Genetic Algorithm to the creation of functional systems which are too complex in their dynamics to be analyzed or pre-specified in detail. Such systems can be built, but (probably) not understood. Two main examples of the application of the GP philosophy are introduced one is the creation of an arti...

In Ref. [ 1 ] the propagation of a longitudinal slow mode parallel to an applied magnetic field has been observed in a magneto-rheological slurry. This mode has been discussed in terms of a Biot slow compressional wave as it is found in porous fluid-saturated media [ 1-3 ]. The slow mode described in ref. 1 is only observed in the presence of an external magnetic field. This feature all by itse...

As a reaction to the increasing noise pollution, caused by the expansion of airports close to residential areas, porous trailing edges are investigated to reduce the aeroacoustic noise produced by flow around the airframe. Besides mechanical and acoustical investigations of porous materials, the fouling behavior of promising materials is an important aspect to estimate the performance in long-t...

has been verified experimentally when the charge moves inside a magnetic medium for which B is much larger than μ0H [9]. 3 It is sometimes preferable that the force law be given in term of the total magnetic field on the current, in which case it is generally best (in the author’s opinion) to use the Maxwell stress tensor [8]. In 1908 Einstein and Laub [10, 11, 12] argued that the force density...

Dimensionless numbers are of key importance in parametric analysis engineering problems. They also extremely useful understanding the similarity among problems belonging to different unit operations. Very large number dimensionless used heat and mass transfer, fluid mechanics, food dairy processing. Well-known numbers, like Reynolds, Prandtl, Nusselt, Grashof, Biot, Furier, Power, Lews Laplace ...

Temperature distribution is a key function for analyzing and optimizing the thermal behavior of various process equipments. Moving bed reactor (MBR) is one of the high-tech process equipment which tries to improve the process performance and its energy consumption by fluidizing solid particles in a base fluid. In the present study, thermal behavior of MBR has been analyzed through mathematical ...