Conjugated Heat Transfer, Elliptical Finned Tube Heat Exchanger Vs. Circular Fin

$240.00 Student Discount

In this project, by investigating conjugated heat transfer, the effect of cross-sectional change (with the constant area) on the rate of improvement of heat flux passing through the circular and elliptical finned tube heat exchanger was compared.

Click on Add To Cart and obtain the Geometry file, Mesh file, and a Comprehensive ANSYS Fluent Training Video. By the way, You can pay in installments through Klarna, Afterpay (Clearpay), and Affirm.

To Order Your Project or benefit from a CFD consultation, contact our experts via email ([email protected]), online support tab, or WhatsApp at +44 7443 197273.

There are some Free Products to check our service quality.

If you want the training video in another language instead of English, ask it via [email protected] after you buy the product.

Special Offers For Single Product

If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
If you need expert consultation through the training video, this option gives you 1-hour technical support.
The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.



The use of heat exchangers in the oil and gas industry and power plants is prevalent. Finned tube heat exchangers are used to cool the desalinated crude oil. These heat exchangers ameliorate heat transfer by increasing the effective surface area due to the high fins and creating more turbulence in the flow. Fins are used when the working fluid in contact with that part has a lower heat transfer coefficient. The following figure shows an example of this type of heat exchanger.

elliptical finned tube heat exchanger

Problem Description

In this project, the effect of cross-sectional change (with the constant area) on the rate of improvement of heat flux passing through the finned tube heat exchanger was compared by investigating conjugated heat transfer. Ansys Fluent software was used for the simulation. Two circular and elliptical sections with equal cross-section areas are examined for the internal fluid section. One row of this type of finned tube heat exchanger was modeled to reduce the computational costs. The hot inlet fluid was crude oil with a temperature of 200 ° C and a velocity of 0.3 m / s. Air fluid with a temperature of 25 ° C and velocity of 2 m / s was used for the external flow section. The figure below shows the computational domain of the simulation.

elliptical finned tube heat exchangerelliptical finned tube heat exchanger

Finned Tube Heat Exchanger Geometry & Mesh

The geometry was designed using the Design modeler module (figure below). Its geometric specifications consist of a pipe with a diameter of 10, a thickness of 1 and a length of 100 cm, and square fins with a side of 30 cm. For the elliptical case, the length of the large-diameter was 10, and the small diameter was 2.5 cm. The thickness of the fins was 0.5 cm and at a distance of 20 cm from each other, which makes a total of 10 fins.

elliptical finned tube heat exchanger

For grid generation, unstructured mesh with about 5 million elements in the Ansys meshing module was used. In addition, a boundary layer mesh was used near the walls to satisfy the Y-Plus number condition of the enhanced wall treatment. The following figure shows the meshing geometry.

elliptical finned tube heat exchangerelliptical finned tube heat exchangerelliptical finned tube heat exchanger

Solver Setting

Fluent software was used to solve the governing equations numerically. The problem is analyzed steady, using the pressure-based method and neglecting the gravitational effects.

Boundary conditions and Solution methods

Also, The table below shows the characteristics and values of boundary conditions, along with the models and hypotheses.

Material Properties (crude oil)
Amount Fluid properties (water)
877.1 Density
1800 Specific heat
0.13 Thermal conductivity
0.0082 viscosity
Boundary Condition (Finned Tube Heat Exchanger)
Type Amount (units)
Velocity inlet (crude oil at 200 C) 0.3 m/s
Velocity inlet (air at 25 C) 2  m/s
pressure outlet (gauge pressure) 0 pa
Cell zone condition
solid fluid
Fin (copper) Air, crude-oil
Turbulence models (Finned Tube Heat Exchanger)
K-  viscous model
realizable K- model
Enhanced wall treatment Wall function
Solution methods (Finned Tube Heat Exchanger)
Simple pressure velocity coupling
Second-order pressure spatial discretization
Second-order upwind momentum
First-order upwind turbulent kinetic energy
First-order upwind turbulent dissipation rate
Second-order upwind energy
Initialization (Finned Tube Heat Exchanger)
standard initialization method
0 (Pa) gauge pressure
0 (m/s) y-velocity
0 (m/s) x-velocity , z-velocity
30 C Temperature

Finned Tube Heat Exchanger Results

In this section, by examining the heat flux passing through the finned tube wall for both circular and elliptical cross-sectional surfaces, it was observed that the cross-sectional change from circular to elliptical increased the heat flux passing through the heat exchanger(Figure below).

Circular Finned Tube Heat Exchanger Heat Flux

elliptical finned tube heat exchanger

Elliptical Finned Tube Heat Exchanger Heat Flux

elliptical finned tube heat exchanger

The main reasons for this improvement in heat transfer are the increase in the effective surface contact with the airflow due to the elliptical cross-section and the increment in the intensity of the flow turbulence when using the elliptical cross-section.

type Total surface heat flux (W/m2)
Circular section 764.91
Elliptical section 911.39

Also, by observing the temperature contours on the wall of the heat exchanger, it was found that a higher temperature distribution was created for the ellipse section in the fins.


There are no reviews yet.

Leave a customer review

Your email address will not be published. Required fields are marked *

Back To Top
Whatsapp Call On WhatsApp