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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Unit conversion

Posted 06.10.2013, 23:06 GMT-4 MEMS & Nanotechnology, Fluid & Heat, MEMS & Piezoelectric Devices, Microfluidics, Geometry Version 4.3b 2 Replies

Lalitha Saravanan
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Hi all,

I wanted to convert microliter/minute to m/s
i used
1 m3/s = 3.6e12 microliter/hour formula.
But it seems to make my flow very slow.

Please suggest if I need to use a different conversion formula.
Thanks
2 Replies Last Post 07.10.2013, 04:13 GMT-4
Magnus Ringh COMSOL Employee

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Posted: 1 decade ago 07.10.2013, 04:08 GMT-4
Hi,

This conversion is correct. If you define the volumetric flow rate using the unit syntax in COMSOL as

3.6e12[µl/h]

(for microliters per hour) then COMSOL converts it to 1 m^3/s for a model using SI units. If that is fast or slow depends on other model parameters, I guess, but in microfluidics it seems like a very high number.

Best regards,
Magnus Ringh, COMSOL
Hi, This conversion is correct. If you define the volumetric flow rate using the unit syntax in COMSOL as 3.6e12[µl/h] (for microliters per hour) then COMSOL converts it to 1 m^3/s for a model using SI units. If that is fast or slow depends on other model parameters, I guess, but in microfluidics it seems like a very high number. Best regards, Magnus Ringh, COMSOL
Lalitha Saravanan
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Posted: 1 decade ago 07.10.2013, 04:13 GMT-4
Hi,

Thanks for the reply.
Actually my flow rate is 10 microliter/min, which i wanted to input as meter/second.
So let me try to increase the value
Thanks again

-Lalitha
Hi, Thanks for the reply. Actually my flow rate is 10 microliter/min, which i wanted to input as meter/second. So let me try to increase the value Thanks again -Lalitha

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