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Simulation of heating gasoline in a tank in Ansys Fluent

Storage and transportation of materials at appropriate temperatures have always been considered. This attention becomes more important when it is required that the desired fluid’s temperature stays within a given temperature range. Now, if this fluid is a flammable substance and kept in a relatively cold weather region, keeping this fluid in the desired temperature range requires special heat transfer methods.

The maintenance of fuels, especially fossil fuels such as gasoline, oil, diesel, etc., at a given temperature range for the purpose of transmission and distribution, is always one of the most important issues in the field of fossil fuels such as liquids or gas.

In this analysis, it has been attempted to simulate and analyze the heating of a gasoline fuel tank in the Ansys Fluent software.

Geometry and Mesh

The geometry required to analyze heating gasoline in a tank consists of a cube-shaped compartment containing gasoline and a spiral tube inside the tank space. This geometry is designed in Ansys Design Modeler software. Meshing is also produced by Ansys Meshing software for this geometry. Meshing generated for this geometry is structural. The total number of cells generated is 511821 cells.


To analyze the flow tuebulency in this analysis, the K-epsilon Standard viscosity model is used. Energy and momentum equations are solved simultaneously. Gravity is also considered in this analysis.

Due to temperature variation inside the tank the solidification/melting model has been used to analyze the phase change from liquid to solid.

Boundary Condition

The input flow for hot fluid (water) is defined as Mass Flow Inlet and it is set to 0.194 Kg/s at 335 K. The output flow is also considered as Pressure-Outlet at K 300. The tank wall is insulated.

Discretization of equations

SIMPLE algorithm is used to solve the equations in this analysis. Pressure-Based solver has been used for solving equations. The First Order Upwind method is used to discretize equations.

The results have been shown as fluid/solid volume fraction and thermal contours.

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