**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**2789

# Search results for: entropy generation

##### 2789 Entropy Analysis of a Thermo-Acoustic Stack

**Authors:**
Ahmadali Shirazytabar,
Hamidreza Namazi

**Abstract:**

**Keywords:**
thermo-acoustics,
entropy,
second law of thermodynamics,
Rott’s linear thermo-acoustic approximation

##### 2788 Entropy Generation of Natural Convection Heat Transfer in a Square Cavity Using Al2O3-Water Nanofluid

**Authors:**
M. Alipanah,
A. Ranjbar,
E. Farnad,
F. Alipanah

**Abstract:**

**Keywords:**
entropy generation,
natural convection,
bejan number,
nuselt number,
nanofluid

##### 2787 Numerical Prediction of Entropy Generation in Heat Exchangers

**Authors:**
Nadia Allouache

**Abstract:**

**Keywords:**
heat exchangers,
porous medium,
second law approach,
turbulent flow

##### 2786 Entropy Production in Mixed Convection in a Horizontal Porous Channel Using Darcy-Brinkman Formulation

**Authors:**
Amel Tayari,
Atef Eljerry,
Mourad Magherbi

**Abstract:**

**Keywords:**
entropy generation,
porous media,
heat transfer,
mixed convection,
numerical methods,
darcy,
brinkman

##### 2785 Heat Transfer and Entropy Generation in a Partial Porous Channel Using LTNE and Exothermicity/Endothermicity Features

**Authors:**
Mohsen Torabi,
Nader Karimi,
Kaili Zhang

**Abstract:**

**Keywords:**
entropy generation,
exothermicity or endothermicity,
forced convection,
local thermal non-equilibrium,
analytical modelling

##### 2784 Entropy Generation of Unsteady Reactive Hydromagnetic Generalized Couette Fluid Flow of a Two-Step Exothermic Chemical Reaction Through a Channel

**Authors:**
Rasaq Kareem,
Jacob Gbadeyan

**Abstract:**

**Keywords:**
couette,
entropy,
exothermic,
unsteady

##### 2783 A Paradigm Shift in Energy Policy and Use: Exergy and Hybrid Renewable Energy Technologies

**Authors:**
Adavbiele Airewe Stephen

**Abstract:**

**Keywords:**
entropy,
exergy,
hybrid renewable energy technologies,
sustainability

##### 2782 Numerical Study of Entropy Generation Due to Hybrid Nano-Fluid Flow through Coaxial Porous Disks

**Authors:**
Muhammad Bilal Ameen,
M. Zubair Akbar Qureshi

**Abstract:**

**Keywords:**
entropy generation,
hybrid nano fluid,
heat transfer,
porous disks

##### 2781 Entropy Generation Analysis of Cylindrical Heat Pipe Using Nanofluid

**Authors:**
Morteza Ghanbarpour,
Rahmatollah Khodabandeh

**Abstract:**

**Keywords:**
heat pipe,
nanofluid,
thermodynamics,
entropy generation,
thermal resistance

##### 2780 Evaluation of Heat Transfer and Entropy Generation by Al2O3-Water Nanofluid

**Authors:**
Houda Jalali,
Hassan Abbassi

**Abstract:**

_{2}O

_{3}–water nanofluid in square cavity have been studied. A two-dimensional steady laminar natural convection in a differentially heated square cavity of length L, filled with a nanofluid is investigated numerically. The horizontal walls are considered adiabatic. Vertical walls corresponding to x=0 and x=L are respectively maintained at hot temperature, T

_{h }and cold temperature, T

_{c}. The resolution is performed by the CFD code "FLUENT" in combination with GAMBIT as mesh generator. These simulations are performed by maintaining the Rayleigh numbers varied as 10

^{3}≤ Ra ≤ 10

^{6}, while the solid volume fraction varied from 1% to 5%, the particle size is fixed at dp=33 nm and a range of the temperature from 20 to 70 °C. We used models of thermophysical nanofluids properties based on experimental measurements for studying the effect of adding solid particle into water in natural convection heat transfer and entropy generation of nanofluid. Such as models of thermal conductivity and dynamic viscosity which are dependent on solid volume fraction, particle size and temperature. The average Nusselt number is calculated at the hot wall of the cavity in a different solid volume fraction. The most important results is that at low temperatures (less than 40 °C), the addition of nanosolids Al

_{2}O

_{3}into water leads to a decrease in heat transfer and entropy generation instead of the expected increase, whereas at high temperature, heat transfer and entropy generation increase with the addition of nanosolids. This behavior is due to the contradictory effects of viscosity and thermal conductivity of the nanofluid. These effects are discussed in this work.

**Keywords:**
entropy generation,
heat transfer,
nanofluid,
natural convection

##### 2779 Thermodynamic Analyses of Information Dissipation along the Passive Dendritic Trees and Active Action Potential

**Authors:**
Bahar Hazal Yalçınkaya,
Bayram Yılmaz,
Mustafa Özilgen

**Abstract:**

^{+}ion load, metabolic energy utilization and its thermodynamic aspect contributed for squid giant axon and mammalian motoneuron model. Energy demand is supplied to the neurons in the form of Adenosine triphosphate (ATP). Exergy destruction and entropy generation upon ATP hydrolysis are calculated. ATP utilization, exergy destruction and entropy generation showed differences in each model depending on the variations in the ion transport along the channels.

**Keywords:**
ATP utilization,
entropy generation,
exergy loss,
neuronal information transmittance

##### 2778 Three-Dimensional Unsteady Natural Convection and Entropy Generation in an Inclined Cubical Trapezoidal Cavity Subjected to Uniformly Heated Bottom Wall

**Authors:**
Farshid Fathinia

**Abstract:**

**Keywords:**
transient natural convection,
trapezoidal cavity,
three-dimensional flow,
entropy generation,
second law

##### 2777 Design and Implementation of Pseudorandom Number Generator Using Android Sensors

**Authors:**
Mochamad Beta Auditama,
Yusuf Kurniawan

**Abstract:**

**Keywords:**
Android hardware-based sensor,
deterministic process,
entropy source,
random number generation/generators

##### 2776 Effect of Aging on the Second Law Efficiency, Exergy Destruction and Entropy Generation in the Skeletal Muscles during Exercise

**Authors:**
Jale Çatak,
Bayram Yılmaz,
Mustafa Ozilgen

**Abstract:**

**Keywords:**
aging mitochondria,
entropy generation,
exergy destruction,
muscle work performance,
second law efficiency

##### 2775 Comparison of Entropy Coefficient and Internal Resistance of Two (Used and Fresh) Cylindrical Commercial Lithium-Ion Battery (NCR18650) with Different Capacities

**Authors:**
Sara Kamalisiahroudi,
Zhang Jianbo,
Bin Wu,
Jun Huang,
Laisuo Su

**Abstract:**

**Keywords:**
heat generation,
Solid Electrolyte Interface (SEI),
potentiometric method,
entropy coefficient

##### 2774 On q-Non-extensive Statistics with Non-Tsallisian Entropy

**Authors:**
Petr Jizba,
Jan Korbel

**Abstract:**

**Keywords:**
multifractals,
Rényi information entropy,
THC entropy,
MaxEnt,
heavy-tailed distributions

##### 2773 Entropy Measures on Neutrosophic Soft Sets and Its Application in Multi Attribute Decision Making

**Authors:**
I. Arockiarani

**Abstract:**

**Keywords:**
entropy measure,
Hausdorff distance,
neutrosophic set,
soft set

##### 2772 Entropy Generation Analysis of Heat Recovery Vapor Generator for Ammonia-Water Mixture

**Authors:**
Chul Ho Han,
Kyoung Hoon Kim

**Abstract:**

**Keywords:**
entropy,
exergy,
ammonia-water mixture,
heat exchanger

##### 2771 On the Topological Entropy of Nonlinear Dynamical Systems

**Authors:**
Graziano Chesi

**Abstract:**

**Keywords:**
non-linear system,
communication constraint,
topological entropy

##### 2770 Linear Study of Electrostatic Ion Temperature Gradient Mode with Entropy Gradient Drift and Sheared Ion Flows

**Authors:**
M. Yaqub Khan,
Usman Shabbir

**Abstract:**

**Keywords:**
entropy,
velocity shear,
ion temperature gradient mode,
drift

##### 2769 Reasons for Non-Applicability of Software Entropy Metrics for Bug Prediction in Android

**Authors:**
Arvinder Kaur,
Deepti Chopra

**Abstract:**

**Keywords:**
android,
bug prediction,
mining software repositories,
software entropy

##### 2768 Analysis of EEG Signals Using Wavelet Entropy and Approximate Entropy: A Case Study on Depression Patients

**Authors:**
Subha D. Puthankattil,
Paul K. Joseph

**Abstract:**

**Keywords:**
EEG,
depression,
wavelet entropy,
approximate entropy,
relative wavelet energy,
multiresolution decomposition

##### 2767 Econophysics: The Use of Entropy Measures in Finance

**Authors:**
Muhammad Sheraz,
Vasile Preda,
Silvia Dedu

**Abstract:**

**Keywords:**
option pricing,
Black-Scholes model,
Tsallis entropy,
Kaniadakis entropy,
weighted entropy,
risk-neutral density

##### 2766 Closed-Form Sharma-Mittal Entropy Rate for Gaussian Processes

**Authors:**
Septimia Sarbu

**Abstract:**

**Keywords:**
generalized entropies,
Sharma-Mittal entropy rate,
Gaussian processes,
eigenvalues of the covariance matrix,
squeeze theorem

##### 2765 The Analysis of a Reactive Hydromagnetic Internal Heat Generating Poiseuille Fluid Flow through a Channel

**Authors:**
Anthony R. Hassan,
Jacob A. Gbadeyan

**Abstract:**

**Keywords:**
chemical kinetics,
entropy generation,
thermal criticality,
adomian decomposition method (ADM) and pade approximation

##### 2764 Entropy Risk Factor Model of Exchange Rate Prediction

**Authors:**
Darrol Stanley,
Levan Efremidze,
Jannie Rossouw

**Abstract:**

**Keywords:**
currency trading,
entropy,
market timing,
risk factor model

##### 2763 Influence of Mass Flow Rate on Forced Convective Heat Transfer through a Nanofluid Filled Direct Absorption Solar Collector

**Authors:**
Salma Parvin,
M. A. Alim

**Abstract:**

_{2}O

_{3}-waternanofluid, TiO

_{2}-waternanofluid, and pure water are used as the working fluid. Entropy production has been taken into account in addition to the collector efficiency and heat transfer enhancement. Penalty finite element method with Galerkin’s weighted residual technique is used to solve the governing non-linear partial differential equations. Numerical simulations are performed for the variation of mass flow rate. The outcomes are presented in the form of isotherms, average output temperature, the average Nusselt number, collector efficiency, average entropy generation, and Bejan number. The results present that the rate of heat transfer and collector efficiency enhance significantly for raising the values of

*m*up to a certain range.

**Keywords:**
DASC,
forced convection,
mass flow rate,
nanofluid

##### 2762 An Alternative Proof for the Topological Entropy of the Motzkin Shift

**Authors:**
Fahad Alsharari,
Mohd Salmi Md. Noorani

**Abstract:**

**Keywords:**
entropy,
Motzkin shift,
mathematical model,
theory

##### 2761 Maximum Entropy Based Image Segmentation of Human Skin Lesion

**Authors:**
Sheema Shuja Khattak,
Gule Saman,
Imran Khan,
Abdus Salam

**Abstract:**

**Keywords:**
shannon,
maximum entropy,
Renyi,
Tsallis entropy

##### 2760 Religion: The Human Entropy

**Authors:**
Abul Kayum Zarzis Alam

**Abstract:**

**Keywords:**
death,
earth,
entropy,
Homo sapiens,
religion and human entropy