The Engine chamber is one of the essential engine components, that is subjected to over the top temperature differences and thermal stresses. Fins are set on the surface of the cylinder to improve the quantity of heat exchange by convec tion. When fuel is burned in an engine, heat is produced. Additional heat is also generated by friction between the moving parts. In air -cooled I.C engine, extended surfaces called fins are provided at the periphery of engine cylinder to increase heat tran sfer rate. That is why the analysis of fin is important to increase the heat transfer rate. The main of aim of this work is to study various researches done in past to improve heat transfer rate of cooling fins by changing cylinder fin geometry and materia l. In the present work, Experiments have been performed to discover the temperature variations inside the fins made in four kind geometries (plate Fins, Circular Pin fins, plate fins with holes, and draft Pin fins ) and consistent state heat exchange examin ation has been studied utilizing a finite element software ANSYS to test and approve results. The temperature variations at various areas of fins models are evaluated by FEM and compared models of fins performance by heat flux and temperature variations obtained by experimentally in An alysis. The principle implemented in this project is to expand the heat dissipation rate by utilizing the wind flow. The main aim of the study is to enhance the thermal properties by shifting geometry, material, and design of fins. Keywords: Heat transfer, extended surfaces, Thermal analysis, and FEM , Analysis and Heat transfer enhancement . Cite this Article: Rajat Kum ar, Devendra Singh and Ajay Kumar Sharma , Static Thermal Analysis of Fins Models Using Ansys . International Journal of Mechanical Engineering and Technology 11(2), 2020, pp. 10-21. http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=11&ITy pe=2 Static Thermal Analysis of Fins Models Using Ansys http://www.iaeme.com/ IJMET/index. asp 11 editor@iaeme.com 1. INTRODUCTION In normal cause, larger parts of an engine remain exposed to the atmospheric air. When the vehicles run, the air at certain relative velocity impinges upon the engine, and sweeps away its heat. The heat carried -away by the air is due to natural convection, therefore this method is known as natural air -cooling. Engines mounted on 2 -wheelers are mostly cooled by natural air. As the heat dissipation is a function of frontal cross -sectional area of the engine, therefore there exists a need to enlarge this area. An engine with enlarge area will becomes bulky and in turn will also reduce the power by weight ratio. Hence, as an alternative arrangement, fins are constructed to enhance the frontal cross -sectional area of the engine. Fins (or ribs) are sharp projectio ns provided on the surfaces of cylinder block and cylinder head. To avoid overheating, and the consequent ill effects, the heat transferred to an engine component (after a certain level) must be removed as quickly as possible and be conveyed to the atmosphe re. The heat exchange from surfaces may, in general, be enhanced by expanding the heat exchange coefficient between a surface and its environment, by expanding the heat exchange zone of the surface, or by both. In most cases, the region of Heat exchange is expanded by using extended surfaces as balances the fins joined to walls and surfaces. Expanded surfaces (fins) are much of the time utilized in heat exchanging devices to increase the heat exchange between an essential surface and the surrounding liquid. Different types of fins, going from moderately simple geometries to complex geometries have been utilized. A shape of the regular fins geometries is rectangular, triangular, cylindrical, trapezoidal etc. For the guideline of conduction, convection, radiatio n of a fin arrangement optimized the quantity of heat it exchanges Increasing the temperature contrast between the fin setup and based upon surroundings, marginally expanding the convection heat transfer coefficient, or somewhat expanding the surface regio n of the fin design of the object enhance the heat exchange. This can be achieved by faster heat dissipation. By using the extended surfaces (Fins) we can improve the heat transfer rate from engine cylinder. For this analysis of the heat transfer rate of the fins is imperative. Every combination of shape, size and material have their own efficiency thereby selecting the best possible combination which give maximum efficiency to get required heat transfer rate for maximum engine efficiency. Extended area on t he cylinder surfaces is use to increase the surface area in contact with the fluid flowing around it. 2. EXTENDED SURFACES (F INS) In the Heat exchange study, the surface that extruded out from a base is known as a fin. fins are utilized to enhance the rate of heat dissipation from or to the environment by expanding the rate of convection. The all of convection, conduction, or radiation of an object chooses the rate of heat it transferred. It increments with the distinction o f temperature between surroundings and the object, additionally expanding the convection coefficient of heat exchange, or expanding the surface region. But, increase of the area also causes increased resistance to the heat flow. Hence, coefficient of heat transfer is based on the total area (the base and fin surface area) which comes out to be less than that of the base. There are different types of shape and size fins used in engineering applications to increasing the heat transfer rate such as  Rectangular fins  Triangular fins  Trapezium fins  Circular segmental fins. Different shape and designs of fins are used in different situations. Rajat Kumar, Devendra Singh and Ajay Kumar Sharma http://www.iaeme.com/ IJMET/index. asp 12 editor@iaeme.com Figure 1 Cylinder with fins (Source: Ahirwar et al. 2018 ). 3. MATERIAL PROPERTIES OF FINS M ATERIAL Thermal analysis of Fins performed by using Aluminum alloy of the Fins material. Composition of Aluminum alloy is shown in Table 1. Table 1 : Material properties of Fins Model Parameters Unit Aluminum alloy (1060) Density (Kg/m3) 2700 Young's Modulus (MPa) 69000 Coefficient of thermal expansion (1/K) 2.3 × 10-5 Poisson's Ratio - 0.33 Elastic modulus (GPa) 70 Ultimate Tensile Strength (MPa) 310 Thermal conductivity (W/m/0C) 200 4. DESIGN AND ANALYSIS OF FINS 4.1. Modeling of Fins Model Fins models designed with the material selection of aluminum alloy 1060 and three Fins model designed here i.e. plate Fins, Circular Pin fins and Rectangular pin fins. Fins model with plate fins and pin fins in type of circular and rectangular holes pin fins fins for passing air through fins. FEM analysis performed through Ansys. The practical use of finite element modeling is known as FEA which is best understood during the real problem solving. FEA has been broadly utilized by the automotive business. It is an extremely prominent instrument for configuration builds in the product development technique. It is imperative to comprehend the FEA basics and design technique, demonstrating systems, the inherent mist akes and their impacts on the nature of the outcomes to render FEA as an effective design tool. FEA is also used as a computational tool for carrying out engineering problem analyses. Static Thermal Analysis of Fins Models Using Ansys http://www.iaeme.com/ IJMET/index. asp 13 editor@iaeme.com Figure 2 : Plate Fins Designed Model in Ansys Figure 3 : Rectangular Pin Fins Designed Model in Ansys Figure 4 : Circular Pin Fins Designed Model in Ansys Figure 5 : Draft Pin Fins Designed Model in Ansys 4.2. Applying Boundary Conditions Figure represents the applied boundary conditions on Fins Model has Heat Flow 13 W, and convection conditions 22 0c while convection on the top surface of the Fins has been applied, to optimize Maximum and minimum temperature also optimize maximum heat flo w rate for high heat transfer. Figure shows the applied boundary conditions of Fins Model. Rajat Kumar, Devendra Singh and Ajay Kumar Sharma http://www.iaeme.com/ IJMET/index. asp 14 editor@iaeme.com Figure 6: Applied Boundary conditions on Plate Fins Figure 7: Applied Boundary conditions on Rectangular plate Fins with holes Figure 8: Applied Boundary conditions on Circular Pin Fins Static Thermal Analysis of Fins Models Using Ansys http://www.iaeme.com/ IJMET/index. asp 15 editor@iaeme.com Figure 9 : Applied Boundary conditions on Draft conical Pin Fins 5. RESULTS AND DISCUSSI ON The Fins model to research is subdivided into a mesh of limited measured components of the basic frame. Inside every segment, the distinction of displacement is thought to be computed by basic polynomial profile capacities and nodal Temperature. Conditions for the strains and stresses are created as far as the obscure nodal temperature. From this, the conditions of balance are collected in a grid shape which can be easily customized. Temperature variation across various Fins models in steady state condition s hows and boundary conditions applied shown in figures Maximum temperature at top. After processing solution, the Temperature and Total Heat Flux in thermal analysis compared with the plate Fins, Circular Pin fins, and plate fins with holes, draft Pin fins . These results as part of structural and thermal analysis are obtained for all three conditions i.e. plate Fins, Circular Pin fins, plate fins with holes, and draft Pin fins . Figures shows the simulation study in Ansys of Fins models . Temp erature Distribu tion Analysis of Fins Models Figure 10: Temperature Distribution of Plate Fins Rajat Kumar, Devendra Singh and Ajay Kumar Sharma http://www.iaeme.com/ IJMET/index. asp 16 editor@iaeme.com Figure 11: Temperature Distribution of Rectangular plate Fins with holes Figure 12: Temperature Distribution of Circular Pin Fins Figure 13 : Temperature Distribution of draft conical Pin Fins Static Thermal Analysis of Fins Models Using Ansys http://www.iaeme.com/ IJMET/index. asp 17 editor@iaeme.com Heat Flux and Stress Analysis of Fins Models Figure 14: Heat Flux and Stress of Plate Fins Figure 15: Heat flux of Rectangular plate Fins with holes Figure 16: Heat flux and Stress of Circular Pin Fins Rajat Kumar, Devendra Singh and Ajay Kumar Sharma http://www.iaeme.com/ IJMET/index. asp 18 editor@iaeme.com Figure 1 7: Heat flux and Stress of Circular Pin Fins Table 2: Temperature Variations of Fins Models Geometry Condition Heat Flow (watt) Max Temperature (°C) Min Temperature (°C) Temperature drop(°C) fins with rectangular plate 13 55.22 53.5 1.72 Circular pin fins 13 66.29 62.23 4.06 Conical draft pin fins 13 81.68 76.08 5.6 Rectangular plate fins with holes 13 52.63 50.39 2.24 Figure 1 8: Temperature Variationsin Models of Fin s 55.22 66.29 81.68 52.63 53.5 62.23 76.08 50.39 0102030405060708090 fins with rectangular plateCircular pin fins Conical draft pin finsRectangular plate fins with holesTemperature ( °C) Types of Fins Models Temperature variations Max Temperature (°C) Min Temperature (°C) Static Thermal Analysis of Fins Models Using Ansys http://www.iaeme.com/ IJMET/index. asp 19 editor@iaeme.com Figure 19: Total Temperature Drop in Fin s Models Table 3 : Heat Flux Found on All conditions of Fin Models Geometry Condition Heat Flux Thermal Stress(MPa) Weight(kg) fins with rectangular plate 0.0065 0.217 0.554 Circular pin fins 0.016 0.073 0.301 Conical draft pin fins 0.015 0.074 0.223 Rectangular plate fins with holes 0.014 0.322 0.48 Figure 20: Comparison of Heat flux of Fin Models 1.72 4.06 5.6 2.24 0123456 fins with rectangular plateCircular pin fins Conical draft pin fins Rectangular plate fins with holesTemperature ( °C) Types of Fins models Temperature drop( °C) 0.0065 0.016 0.015 0.014 00.0020.0040.0060.0080.010.0120.0140.0160.018 fins with rectangular plateCircular pin fins Conical draft pin finsRectangular plate fins with holesHeat Flux (W/mm2) Types of Fin models Heat Flux Rajat Kumar, Devendra Singh and Ajay Kumar Sharma http://www.iaeme.com/ IJMET/index. asp 20 editor@iaeme.com Figure 21: Comparison of Thermal Stresses of Fin Models 6. CONCLUSION From the comparative analysis of plate Fins, Circular Pin fins, plate fins with holes, and draft Pin fins study conclusion is that the Total heat flux found maximum 0.016 W/mm2 in Circular Pin fins. Maximum temperature found in Conical draft Pin Fins is 81.680C and Minimum Temperature found in Plate Fins is 55.32 0C. Maximum Temperature drop found on Conical draft pin fin 5.6 °C and minimum temperature drop found on plate fin is 1.72°C. So, it is concluded that Pin Fins with Conical draft Pin Fins is shows better Heat transfer properties in this analysis. Thus, better heat transfer for fins or an experimental result shows that Conical draft Pin Fins having better than plate Fins . The overall analysis is performed on ANSYS FEM analysis Tool . Thus, further research can be carried with the advance materials and different designing, analysis tools. From the above study work the following conclusions are made:  The thermal analysis of fins by modifying its certain parameters such as geometry and Plate fins and Pin fins has been completed.  By observing the analysis results, we can easily say; using Conical draft Pin Fins with material Aluminum alloy 1060 is better since the temperature drop and the heat transfer rate in a Conical draft Pin Fins much more compared to Plate fins .