Feb 16, 2011

Lab: ME2135-2 Drag of Spheres

This is one of the labs for ME2135 Fluid Mechanics II.

  • To investigate the relationship between the Drag Coefficient, CD and Reynolds Number, Re for smooth spheres at low Reynolds Number.
  • To compare experimental results with theoretical prediction of Stokes Law.

Well, that's just technical, what we did was dropping different kinds of spheres of different sizes into first castor oil and then engine oil, and timing them. That gives the speed, the density of fluid gives the drag force, the drag force, density and speed again give the drag coefficient, the drag coefficient gives the Reynolds number and ultimately, the Reynolds number gives the viscosity of the fluid, μ. Phew...
This is my lab partner, Tan Wil Sen.
He's been my lab partner since Year 1 because we're always in the same lab group, and he's staying just next door to me in hall. So it's pretty convenient as we can discuss about our lab report together.

These are the two huge tube with nice coloured liquids. The yellow one is castor oil and the red one is engine oil. Despite the fact that they're colourful, it's yucky to touch them as they're oil.

My lab reports:
* Note that these are for your reference only. Please do not copy entirely.
ME2135-1 Characteristics of Centrifugal Pump
ME2135-2 Drag on Sphere

Javin Tham, MSc, PMP, PMI-ACP, CSSBB Musician | Engineer | YouTube Coverist

Feb 14, 2011

Valentine's Day 2011

Thank my dear again for coming to NUS again all the way from UTM. Despite the fact that I have lecture in the afternoon of Monday, I brought her out to Orchard at noon.

Lunch at Watami Singapore, ION Orchard

Salad, MUG Rootbeer, Yuzu Soda

Watami Ramen, with Salmon Rolls ($13.80 in set)

Unagi Stone Pot with rice ($12.80 in set)

And a Caramel Chocolate Twist with Waffle Bowl ($6.90) from Marvelous Cream as dessert before I went back NUS for lecture.

So sad that I'll have to leave her alone straying around Orchard. But it's fine since her other friend from UTM was meeting her after that.

My Valentine's gifts from dear dear

Javin Joling

Love Note                                 幸福坊主

Javin Tham, MSc, PMP, PMI-ACP, CSSBB Musician | Engineer | YouTube Coverist

Feb 1, 2011




Javin Tham, MSc, PMP, PMI-ACP, CSSBB Musician | Engineer | YouTube Coverist