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� �<br />

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The dynamic viscosity in equa‐<br />

tion (2) can be presented as shown below:<br />

(6)<br />

w<strong>here</strong> ν is the kinematic viscosity.<br />

128 M�<br />

�p<br />

�<br />

�d<br />

�p<br />

d<br />

4<br />

l�<br />

Before the simulation is<br />

conducted, the kinematic viscosity needs <strong>to</strong> be<br />

determined and this is done by utilising equation<br />

(7) as shown below:<br />

<strong>MIMET</strong> Technical Bulletin Volume 1 (2) 2010<br />

(7)<br />

Note that is the pressure drop along a segment, and<br />

l is the segment length.<br />

By means of measured steady state pressure values,<br />

the calculated kinematic viscosity ν is identified as<br />

0.00011m 2 /s.<br />

For solving the partial differential equations (1) and<br />

(2), the rational numerical discrete method is used.<br />

Here, upwind method is used <strong>to</strong> discretize the<br />

| MARINE FRONTIER @ <strong>UniKL</strong><br />

110

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