Dear SimScalers,

in this weeks spotlight we will have a look at a simulation of liquid water flowing through a **heat-exchanger** by @kcontractor.

This project is aimed at simulating the flow of liquid water super-heated to a temperature of 198° C (471 K) in a heat-exchanger. The primary purpose is to determine the pressure drop across the heat-exchanger and determine the mass flow distribution in the heat-exchanger pipes.

**Geometry:**

**Mesh:**

Type: **Hex-dominant parametric (Snappy Hex Mesh)**

The geometry was uploaded and meshed using the snappyHexMesh tool.

**Mesh Information:**

**Nodes:** 5268269

**1D elements (edges)** 0

**2D elements (faces):** 15007362

**3D elements (volumes):** 4923285

**Simulation:**

Type: **Incompressible Fluid Flow Analysis**

**Simulation Setup:**

**Simulations Details:**

Turbulence Model: **k-Omega SST**

Steady-state simulation with **SIMPLE** as a solver.

**Material:**

Newtonian Fluid: Air

Kinematic viscosity [\frac{m^2}{s}] : 0.000015295

Density [\frac{kg}{m^3}] : 867

**Initial Conditions:**

Turbulent kinetic energy value [\frac{m^2}{s^2}]: 0.0012

Specific turbulence dissipation rate [\frac{1}{s}]: 12.22

**Results:**

**A qualitative representation of the velocity distribution of the entire pipe-set:**

Taking a closer look a the velocity distribution, it can be determined that the mass flow is not evenly distributed across all the pipe sets. This provides a basis for further quantitative analysis.

The two dimensional velocity and pressure distributions are indicative of the pressure drop across the entire heat-exchanger.

**Velocity:**

**Pressure:**

**Cross-Sectional View:**

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**SimScale project**:

To look at the simulation setup, please have a look at the project from @kcontractor :

**Pressure Drop Across a Heat-exchanger due to Flow of Super-heated Water**

To copy this project into your workspace, simply follow the instruction given in the picture below.