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visits member for 3 years, 3 months
seen May 1 at 5:33

Mechanical Engineering Student at Georgia Tech

EMail:Gharrington44@gmail.com


Jul
2
awarded  Inquisitive
Jul
2
awarded  Curious
May
1
comment Is this how I find the rate of change of internal energy for filling a vessel?
@KyleKanos how would I use the T-ds equation to find an expression for $\frac{ds}{dt}$? I wanted to use $T\frac{ds}{dt}=\frac{du}{dt}+P\frac{dv}{dt}$ but T in the tank is changing with time. And it doesn't look like i could apply the product rule to that since it's already in the differential form
May
1
comment Is this how I find the rate of change of internal energy for filling a vessel?
yes i have all the variables. I just wanted to know if that step was right. I was given the expression for the change in pressure, and i determined change in $v$ with the ideal gas law. and i found dhdt by the energy balance
May
1
asked Is this how I find the rate of change of internal energy for filling a vessel?
Apr
29
asked Does transverse flow always assist in mixed convection?
Apr
28
asked Poseuille number for flat channel?
Apr
25
awarded  Popular Question
Apr
24
awarded  Popular Question
Apr
18
comment Thermal resistance of thermal interface materials?
@ThePhoton It all makes sense now that I remember the coolant is being constantly replenished and I assume it's a constant temperature. Thanks guys
Apr
18
comment Thermal resistance of thermal interface materials?
Lets say the chip needs to operate at $T_H$ and it dissipates constant 2 W. If we have a low total resistance, then doesnt that make the coolant temperature very close to $T_H$? But you just said you want it as low as possible. This is why I am getting confused
Apr
18
asked Thermal resistance of thermal interface materials?
Apr
15
comment RMS Free Path vs Mean Free Path
@DavidZ I found an 8% difference between the two methods so I am not sure which one is more accurate
Apr
15
comment RMS Free Path vs Mean Free Path
@DavidZ When you say the free path distribution is exponential in the book's derivation, are you referring to equation 3.68?
Apr
15
comment RMS Free Path vs Mean Free Path
@DavidZ I found a resource that says $\Lambda_{rms}=\sqrt2 \Lambda$. It is found on page 180-181 of this book at this link and is equation 3.75... books.google.com/…
Apr
14
asked How do I determine resistivity from electron defects of high purity gold?
Apr
14
comment RMS Free Path vs Mean Free Path
@DavidZ Someone else told me the RMS free path is $\Lambda_{rms}=\sqrt2 \Lambda$
Apr
14
comment RMS Free Path vs Mean Free Path
@DavidZ, why do you tell me to not say $\Lambda=\bar v \tau$ but then you state that in your derivation? The same goes for $\Lambda_{rms}=\bar v_{rms} \tau_{rms}$
Apr
14
accepted RMS Free Path vs Mean Free Path
Apr
13
comment RMS Free Path vs Mean Free Path
I have no idea what to even do with that honestly. I am not a molecular physics guy. I just need to find a formula for RMS free path and there is nothing on google.