Entropy Generation Rate for a Peristaltic Pump

Abstract

In view of the second law of thermodynamics, the idealized process is usually so selected as to be one of minimum available energy degradation. A measure of departure from this ideal process is the entropy generation rate. In this paper, we shall investigate this aspect concerning an adiabatic peristaltic pump. Our analysis also exhibits the general features of a flow in a contracting tube. It is shown that the dynamics of the system can be reduced to that of a classical Hagen-Poiseuille flow with a source term in the continuity equation and an additional induced force in the momentum equation.In reference to exergy, the analysis reveals that peristaltic pumps generate more entropy than steady walled tubes and are not, from this point of view, competitive devices. The reason for this high-energy degradation is found in the dynamic behavior. The flow rate is not constant along the tube, but increases as sections downstream are reached. This results in high velocity gradients and therefore in strong dynamic irreversibility, which is the prime entropy source of the system. For the classical Hagen-Poiseuille flow, the entropy is mainly generated by heat diffusion.

Entropy Generation Analysis for a CNT Suspension Nanofluid in Plumb Ducts with Peristalsis

“…The first part is the entropy generation due to finite temperature difference (Nscond) and the second part is the entropy generation due to viscous effects (Nsvisc). The Bejan number is defined as [17][18][19][20][21][22][23][24] . …”

“…According to them the entropy number increases with increasing Brinkman number. Souidi et al [18] discussed the entropy generation rate for a peristaltic pump. Entropy generation due to heat and fluid flow in backward facing step flow with various expansion ratios was studied by Abu-Nada [19].…”

Thermal analysis of an Eyring-Powell fluid flow-through a constricted channel

“…Afterwards, numerous investigators [12][13][14][15][16][17][18][19] further explored the phenomenon of heat transfer and entropy generation in convective heat flow problems under various physical assumptions. Souidi et al [20] conducted an entropy analysis for a peristaltic pump in a contracting tube. Recently, Munawar et al [21] investigated production of entropy associated with second-law in a biological flow of variable viscosity fluid.…”

Analysis of Entropy Generation in Flow of Methanol-Based Nanofluid in a Sinusoidal Wavy Channel

“…Improved economics are being proposed around the world to more accurately preserve the present energy supply shortage [23][24][25][26][27][28][29][30][31][32][33][34]. Soudi et al [35] investigated the entropy generation rate in a peristaltic pump. They analyzed that peristalsis is a great entropy generator process, due essentially to dynamic irreversibility.…”