Theoretical, Computational, and Experimental Solutions to Thermo-Fluid Systems: Select Proceedings of ICITFES 2020

Description

This book presents select proceedings of the International Conference on Innovations in Thermo-Fluid Engineering and Sciences (ICITFES 2020). It covers topics in theoretical and experimental fluid dynamics, numerical methods in heat transfer and fluid mechanics, different modes of heat transfer, multiphase flow, fluid machinery, fluid power, refrigeration and air conditioning, and cryogenics. The book will be helpful to the researchers, scientists, and professionals working in the field of fluid mechanics and machinery, and thermal engineering. Contents About the Editors Numerical Investigation on Heat Transfer Characteristics of a Triangular Slotted Pin Fin Heat Sink 1 Introduction 2 Problem Definition and Method of Solution 3 Result and Discussion 3.1 Grid Convergence Test 3.2 Validation of Results 3.3 Local Temperature Profiles 3.4 Base Temperature of Heat Sink 3.5 Nusselt Number 3.6 Pressure Drop Across the Heat Sink 3.7 Thermal Performance of Heat Sink 4 Conclusions References Heat Transfer Analysis of an Equilateral Triangular Slotted Pin Fin: An Experimental Work 1 Introduction 2 Problem Description and Experimental Setup 3 Result and Discussion 3.1 Local Fin Temperature Profiles 3.2 Variation in Heat Dissipation Rate with the Number of Slots at Different Mass Flow Rates of Air 3.3 Effectiveness of Equilateral Triangular Slotted Fin for Various Mass Flow Rates of Air 3.4 Weight Reduction Factor of Fin at Different Mass Flow Rates Air 4 Conclusions References Thermo-Fluid Performance Evaluation of an Elliptical Tube Type Fin-and-Tube Heat Exchanger Supported with Winglets 1 Introduction 2 Mathematical Formulation 2.1 Computational Domain 2.2 Governing Equation 2.3 Boundary Conditions and Parameter Definitions 2.4 Numerical Method 3 Results and Discussions 3.1 Grid Independency Test and Validation of Numerical Model 3.2 Performance Analysis of Plain Fin-and-Tube Heat Transfer Surface 3.3 Performance Analysis of Winglet Supported Fin-and-Tube Heat Transfer Surface 4 Conclusions References Experimental Analysis of a Crossflow Heat Exchanger Using Elliptical Shape Tube for Air Side Heat Recovery 1 Introduction 2 Data Reduction 3 Experimental Setup 4 Results and Discussions 5 Conclusions References An Experimental Investigation of Tube-in-Tube Type Heat Exchanger to Enhance Heat Transfer Using Titanium Oxide TiO2-Water Nanofluid 1 Introduction 2 Fabrication of Tube in Tube Heat exchanger-Photographic View 2.1 Specifications of Heat Exchanger (Tube-in-Tube) 2.2 Methodology 3 Results and Discussions 4 Conclusions References Earth Air Tube Heat Exchanger—A Parametric Study 1 Introduction 2 Thermodynamic Modeling for Length of EATHE System 3 Results and Discussion 4 Conclusions References Natural Convection in a Square Porous Enclosure with a Pair of Fluid-Pockets 1 Introduction 2 Mathematical Formulation 3 Numerical Method 4 Results and Discussion 4.1 Validation of Numerical Model 5 Conclusions References Numerical Analysis of Natural Convection in a Partially Open Square Cavity with Multiple Heat Sources 1 Introduction 2 Problem Description 3 Mathematical Modeling 4 Numerical Procedure 5 Result and Discussion 5.1 Effect of s* on Average Nusselt Number 5.2 Effect of the Size of Opening on Average Nusselt Number 6 Conclusion References Simulation Studies of Heat Transfer by Natural Convection from an Isothermal Rectangular Cylinder Using ANSYS Fluent 1 Introduction 2 Problem Definition 3 Simulation in ANSYS Fluent 3.1 Optimality of Mesh 3.2 Boundary Conditions 4 Results and Discussion 4.1 Velocity Distribution 4.2 Stream Line Patterns 4.3 Temperature Distribution 5 Conclusions References Forced Convective Wake Dynamics Past a Semicircular Cylinder at Incidence with a Downstream Circular Cylinder in Crossflow 1 Introduction 2 Physical Problem Description and Numerical Model 3 Result and Discussion 3.1 Streamline, Vorticity Contour, and Isotherm 3.2 Force Coefficients, Nusselt Number and Strouhal Number 4 Conclusions References Electro-thermal Convection in a Rectangular Enclosure 1 Introduction 2 Problem Description and Mathematical Modeling Aspect 3 Numerical Aspect 4 Results and Discussion 4.1 Effect of Rayleigh Number (Ra) 4.2 Effect of Electric Parameter T 5 Conclusions References Numerical Investigation of Aspect Ratio Effect on Biomimetic Heat Sink Model with Two Inlet-Outlet Pairs, for Cooling Rectangular Shaped Electronic Circuits 1 Introduction 2 Boundary Conditions and Methodology 3 Governing Equations and Data Reduction 4 Numerical Analysis 5 Results and Discussion 5.1 Validation 5.2 Thermal Characteristics 5.3 Hydraulic Characteristics 6 Conclusion References Effect of Filling Ratio on Performance of Two Loop Pulsating Heat Pipe 1 Introduction 2 Test Setup and Measurement 3 Performance Calculation 4 Results and Discussion 4.1 Start-up of the Pulsating Heat Pipe 4.2 Effect of the Filling Ratio 4.3 Effect of the Heat Input 5 Thermal Performance Comparison 6 Conclusion References Optimization of Process Parameters of Sintered Copper Wick Heat Pipe Using Response Surface Methodology 1 Introduction 2 Experimental Setup and Procedure 3 Results and Discussion 3.1 Heat Transfer Coefficient of Water (H) 3.2 Heat Transfer Coefficient of Methonol (H) 3.3 Comparison of Heat Pipe Working Fluids: (Water Versus Methanol) 4 Optimization of Process Parameters by Response Surface Methodology (RSM) 5 Conclusion References A Numerical Study on the Flapping Dynamics of a Heaving Flexible Foil in a Uniform Flow 1 Introduction 2 Governing Equations and Numerical Methodology 3 Verification 4 Results and Discussion 5 Conclusions References Effect of Heat Shields on Performance of Rolls Integrated with Internal Heaters and Its Simulation 1 Introduction 2 Materials and Methodology 2.1 Materials Used 2.2 Experimental Setup 2.3 Simulation 3 Results and Discussion 3.1 Experimental Results 3.2 Simulation Results 4 Conclusions References Influence of Geometric and Operating Parameters on the Heat Transfer Enhancement of Synthetic Jet 1 Introduction 2 Synthetic Jet 3 Basic Theory and Numerical Procedure 4 Conclusion References A Numerical Investigation of Effect of Shape of Orifice on the Heat Transfer Characteristics of a Synthetic Jet 1 Introduction 2 Literature Review 3 Modeling Parameters of Synthetic Jet 4 Basic Theory, Numerical Procedure, and Validation 5 Conclusion References Atomization Characteristics of a Porous Injector 1 Introduction 2 Experimental Investigation 2.1 Background for Injector Design 2.2 Experimental Setup 2.3 Operating Conditions 2.4 Air-Assisted Porous Injector Versus Other Injectors 2.5 Spray Imaging 3 Results and Discussion 3.1 Breakup Length 3.2 Spray Angle 4 Conclusion References Numerical Simulation of PCM-Based Heat Sink with Plate Fins for Thermal Management of Electronic Components 1 Introduction 2 Physical Model 3 Assumptions and Governing Equation 4 Numerical Solution and Validation 5 Results and Discussion 5.1 Effect of Heat Flux on Heat Sink Configuration 5.2 Enhancement of PCM Melting with Addition of Fins 5.3 Effect of Heat Sink Configuration 5.4 Enhancement in Operation Time to Reach Set Point Temperature (SPT) 6 Conclusion References Mixed Convective Power-Law Fluid Flow and Heat Transfer Characteristics Past a Semi-circular Cylinder Mounted with a Splitter Plate 1 Introduction 2 Grid Generation and Boundary Conditions 3 Governing Equations and Numerical Methodology 4 Results and Discussions 5 Conclusions References Design and Analysis of Cold Box for Helium Liquefier/Refrigerator 1 Introduction 2 Analysis and Discussion 2.1 Analysis of Complete System 2.2 Analysis of Heat Exchangers 3 Results 3.1 Temperature Distribution in Heat Exchangers 3.2 Comparison of the Temperature Distribution in All Heat Exchangers and Support System 3.3 The Fluid Inside the Offset Strip Fin 3.4 Temperature Distribution in Fluid in the Heat Exchanger 4 Conclusion References Effect of Porosity on the Performance of an GM-Type DIPTR Using CFD 1 Introduction 2 CFD 2.1 Essential Boundary Conditions with Important Assumptions 3 3D-Axisymmetric Analysis of GM-Type Pulse Tube Refrigerator 4 Governing Equation 5 Numerical Optimization 6 Porosity Effect on GM-Type Diptr 7 Conclusions References Numerical Analysis of Pulse Tube Cryocooler and Optimization Using Taguchi Method 1 Introduction 2 Methodology 3 Theoretical Study on Ptr—Adiabatic Gas Behaviour 3.1 Formula Used 4 Result and Discussion 4.1 Modelling 5 Conclusion References Entropy Generation Minimization of Vapour Absorption Heat Transformer 1 Introduction 2 Working Principle 3 Mathematical Modeling 3.1 Assumptions Used in the Analysis 4 Results and Discussion 4.1 Effect of Heat Source Temperature 4.2 Effect of Condenser Temperature 5 Conclusion References Exergy Studies on a Hybrid Desalination and Cooling Plant 1 Introduction 2 Methodology 3 Results and Discussion 4 Conclusions References Performance Analysis of a Desert Cooler for Different Climatic Conditions in India 1 Introduction 2 Mathematical Analysis 3 Experimental Validation 4 Determination of Closeness of Experimental and Theoretical Readings 4.1 Root Mean Square of Percentage Deviation (e) 4.2 Coefficient of Correlation (r) 5 Performance of Cooler 6 Result and Conclusion References Energy and Environmental Analyses of Active Solar Dryer for Medicinal Herbs Drying 1 Introduction 2 Experimental Setup and Experimental Procedure 3 Performance Analysis 4 Results and Discussion 5 Conclusions References Modelling and Trade-Off Analysis of Performance Parameters for Counter Flow Packed Bed Liquid Desiccant air Dehumidifier 1 Introduction 2 Evaluation of Equilibrium Air Humidity 2.1 Vapour Pressure of LiCl 2.2 Air Equilibrium Specific Humidity at Desiccant Surface (ωe) 3 Performance Indices 3.1 Condensation Rate 3.2 Moisture Effectiveness 3.3 Enthalpy Effectiveness 4 Results and Discussion 4.1 Experimental Data Analysis 4.2 Trade-Off Analysis of Performance Parameters 5 Modelling Using Stepwise Regression (SWR) Approach 6 Model Comparison with Literature 7 Parametric Study 8 Conclusions References Design of Solar Photovoltaic/Thermal System (PVT) with Thermal Energy Storage for Air-Conditioning Applications 1 Introduction 2 System Modeling 2.1 Photovoltaic Module with Coolant Circuit 3 Model Analysis and Observations 4 Exergy Analysis 5 Conclusions References Measurement of Temperature Distribution Using Liquid Crystal Thermography Technique Over the Absorber Plate of Solar Air Heater 1 Introduction 2 Prior Work for the Calibration of TLC and Uncertainty Measurement 3 Parametric Analysis for the Uncertainty Measurement of TLCs 3.1 Effect of Bandwidth on TLC 3.2 Effect of Lighting Angle 3.3 Effect of Coating Thickness 3.4 Effect of Coating Material Excellence 4 Prior Work in LCT for the Temperature and Nu Number Distribution 5 Evaluation of Heat Transfer Coefficients 5.1 Precautions During Image Capture 6 Conclusions References Compressible Flow Through Convergent–Divergent Nozzle 1 Introduction 2 Problem and Numerical Procedure 2.1 Theory 2.2 Geometry and Mesh 2.3 Mathematical Formulation 3 Results and Discussion 4 Conclusions References A Comparative Study of Fluid Flow Characteristics of Dual Jet Using Different RANS-Based Turbulence Models 1 Introduction 2 Mathematical Formulation 3 Boundary Condition 4 Solution Methodology 5 Grid Sensitivity Test and Validation of Numerical Model 6 Results and Discussion 7 Conclusion References Fluid Structure Interaction Study of Damper for Swish and Rattle Noise Refinement 1 Introduction 2 ISHIKAWA Diagram for Rattle Noise of Damper 3 Methodology 4 Results and Discussions 5 Conclusion References A Numerical Model to Study the Fluid–Structure Interaction at a Bridge Pier 1 Introduction 2 Problem Description 3 Analysis of Results 3.1 Results for Initial Geometry 3.2 Method of Optimising Geometry 3.3 Results for Optimised Geometry 4 Conclusion References Numerical Investigation on Performance Enhancement of Rectangular Microchannel by Using Quadrilateral Fins Embedded on the Channel Bed 1 Introduction 2 Problem Description 2.1 Geometrical Description of Model 3 Numerical Methods 3.1 Governing Equation 3.2 Boundary Conditions 4 Model Validation 5 Results and Discussion 6 Conclusion References Investigation on Centrifugal Pump Performance for Various Nose-Cap Geometries 1 Introduction 2 Matlab Programming 3 CFD Analysis and Selection of the Nozzle Cap 3.1 Generation of Control Volume 3.2 Meshing of Control Volume 3.3 Selection of Turbulence Model 3.4 Numerical Solution Method 4 Experimental Setup 4.1 Conclusion References Determination of Coefficient of Contraction of Orifice with Variation of Geometrical Parameter 1 Introduction 2 Theoretical Background 3 Numerical Methodology 3.1 Solution Methodology 3.2 Boundary Conditions 3.3 Numerical Solution 4 Results and Analysis 4.1 Single Phase 5 Conclusion References Solution of Incompressible Navier–Stokes Equation Using Upwind Scheme 1 Introduction 2 Formulations 3 Convergence Details 4 Validation Study 5 Results and Discussion 6 Conclusions References An Efficient Physically Adjusted Central Euler Solver 1 Introduction 2 PACE: An Efficient Central Solver 2.1 Criteria for Distinguishing Smooth Flows from Discontinuities 2.2 Numerical Dissipation in Smooth Region 2.3 Numerical Dissipation for Capturing Shock Waves 2.4 Numerical Dissipation for Capturing Contact Discontinuities 3 Results and Discussion 4 Conclusion References Experimental Study on Vertical Axis Wind Turbine to Harness Wind Power from Rapidly Moving Railway Locomotives 1 Introduction 2 Numerical and Experimental Simulation 3 Results and Discussion 4 Conclusions References Effect of Mach Number on the Rarefied Gas Flow Over a Forward-Facing Step 1 Introduction 2 DSMC 3 Geometry, Grid and Freestream Conditions 4 Validation 5 Results and Discussion 5.1 Rarefied Subsonic Flow (Ma = 0.5) 5.2 Rarefied Hypersonic Flow (Ma = 25) 6 Conclusions References CFD Analysis of Twisted Gas Turbine Blade with Different Cooling Hole Geometries on Leading Edge 1 Introduction 2 Modelling 3 Results and Discussion 3.1 Effect of Blowing Ratio on the Span-Wise Film Cooling Effectiveness for Model 1 3.2 Effect of Blowing Ratio on the Span-Wise Film Cooling Effectiveness for Model 2 4 Conclusions References Validation of Blade Failure of a Kaplan Turbine Under Adverse Conditions Using Numerical Analysis 1 Introduction 2 Experimental and Damage Investigation of Kaplan Turbine 3 Numerical Simulation 4 Results and Discussion 5 Conclusion References Determination of Nusselt Number Over Artificially Roughened Solar Air Heater Using Numerical Approach 1 Introduction 2 CFD Methodology 2.1 Computational Domain 2.2 Grid Generation 2.3 Solver 3 Data Reduction Approach 4 Result and Discussion 5 Conclusion References Unsteady Wake Dynamics Past a Triangular Cylinder at Incidence with a Downstream Semi-circular Cylinder at Re = 100 1 Introduction 2 Physical Problem and Numerical Methodology 2.1 Boundary and Initial Conditions 2.2 Drag and Lift Coefficients 2.3 Strouhal Number 2.4 Nusselt Number 2.5 Mesh Generation 3 Results 3.1 CD For Semicircular and Triangular Cylinder 3.2 CL for Semicircular and Triangular Cylinder 3.3 St for Semicircular Cylinder 3.4 Average Nu for Semicircular and Triangular Cylinder 4 Conclusion References