**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**6

# friction factor Related Publications

##### 6 Steady State Natural Convection in Vertical Heated Rectangular Channel between Two Vertical Parallel MTR-Type Fuel Plates

**Authors:**
Djalal Hamed

**Abstract:**

**Keywords:**
natural convection,
friction factor,
buoyancy force,
friction force,
vertical heated rectangular channel,
MTR-type fuel

##### 5 Numerical Solution of Transient Natural Convection in Vertical Heated Rectangular Channel between Two Vertical Parallel MTR-Type Fuel Plates

**Authors:**
Djalal Hamed

**Abstract:**

The aim of this paper is to perform, by mean of the finite volume method, a numerical solution of the transient natural convection in a narrow rectangular channel between two vertical parallel Material Testing Reactor (MTR)-type fuel plates, imposed under a heat flux with a cosine shape to determine the margin of the nuclear core power at which the natural convection cooling mode can ensure a safe core cooling, where the cladding temperature should not reach a specific safety limits (90 °C). For this purpose, a computer program is developed to determine the principal parameters related to the nuclear core safety, such as the temperature distribution in the fuel plate and in the coolant (light water) as a function of the reactor core power. Throughout the obtained results, we noticed that the core power should not reach 400 kW, to ensure a safe passive residual heat removing from the nuclear core by the upward natural convection cooling mode.

**Keywords:**
friction factor,
buoyancy force,
finite volume method,
transient natural convection,
friction force,
thermal hydraulic analysis,
vertical heated rectangular channel

##### 4 Numerical Investigation of the Effect of Geometrical Shape of Plate Heat Exchangers on Heat Transfer Efficiency

**Authors:**
Hamed Sanei,
Mohammad Bagher Ayani

**Abstract:**

*F*"weighting factor correlation". In this comparison, the minimum amount of F indicates higher efficiency. Results reveal that the

*F*value for rectangular shape is less than circular plate, and hence using rectangular shape of PHS is more efficient than circular one. It was observed that, the amount of friction factor is correlated to the Reynolds numbers, such that friction factor decreased in both rectangular and circular plates with an increase in Reynolds number. Furthermore, such simulations revealed that the amount of heat transfer in rectangular plate is more than circular plate for different range of Reynolds numbers. The difference is more distinct for higher Reynolds number. However, amount of pressure drop in circular plate is less than rectangular plate for the same range of Reynolds numbers which is considered as a negative point for rectangular plate efficiency. It can be concluded that, while rectangular PHSs occupy more space than circular plate, the efficiency of rectangular plate is higher.

**Keywords:**
Heat Transfer,
friction factor,
Reynolds numbers,
Chevron corrugated-plate heat exchanger

##### 3 A Computational Study of Very High Turbulent Flow and Heat Transfer Characteristics in Circular Duct with Hemispherical Inline Baffles

**Authors:**
Dipak Sen,
Rajdeep Ghosh

**Abstract:**

**Keywords:**
Heat Transfer,
Turbulent Flow,
friction factor,
baffle,
pitch ratio,
circular
duct

##### 2 A CFD Study of Heat Transfer Enhancement in Pipe Flow with Al2O3 Nanofluid

**Authors:**
P.Kumar

**Abstract:**

**Keywords:**
Nanofluid,
CFD,
friction factor,
Heat transfer intensification

##### 1 Heat Transfer and Frictional Characteristics in Rectangular Channel with Inclined Perforated Baffles

**Authors:**
Se Kyung Oh,
Ary Bachtiar Krishna Putra,
Soo Whan Ahn

**Abstract:**

**Keywords:**
Heat Transfer,
Turbulent Flow,
friction factor,
rectangular channel,
inclined baffle