**5. Results and discussion**

**Figure 4.**

**Figure 5.**

**Figure 6.**

**34**

*Mesh cell skewness quality metrics.*

*Mesh cell orthogonal quality metrics.*

*Tetrahedral mesh cells for the case of QTT with enlarged small cut for clarification.*

*Inverse Heat Conduction and Heat Exchangers*

The presentation and discussion of results are not based on sub-sectioning the numerical and experimental results. Instead, the results are sub-sectioned based on the hydrothermal parameters, like the velocity, pressure, and thermal performance.

### **5.1 Hydrodynamics analysis**

The hydrodynamics analysis of the flow within internal conduits includes the velocity and pressure structures.
