jamesbread Posted May 4, 2018 Share Posted May 4, 2018 Hello Forum! Since the patch I want to know the thermal conductivity between two objects! I saw the expression referenced in the 266340 update post and applied it in Excel. https://forums.kleientertainment.com/topic/90397-game-update-266340/ Yes they are, see here :https://en.wikipedia.org/wiki/Geometric_mean#Log-average Did you read my post ? Log-average of a and b is exp((log(a)+log(b))/2 and this is the same thing as the square root of ab. You are right about that. Since thermal resistance roughly is length/thermal conductivity, and if we take the length to be half the length of the tile (after all this is not a transfer between two extremities of the tiles), then you get the harmonic mean of thermal conductivities. The thing is, we are not strictly speaking in a case where thermal transfer are ruled by thermal resistance, so I don't know if LMTD is better than harmonic mean. Hydrogen Abyssalite Log-Average Square Root 2.4 0.00001 0.099271736 0.004898979 =EXP((LOG(B11)+LOG(C11))/2) =SQRT(B11*C11) Please let me know if you have any mistakes! Link to comment Share on other sites More sharing options...

Yoma_Nosme Posted May 4, 2018 Share Posted May 4, 2018 @jamesbread Use ln (logarithmus naturalis) instead of log then you'll get the same result as the square root of the product of the two Link to comment Share on other sites More sharing options...

Garry24 Posted May 4, 2018 Share Posted May 4, 2018 sqrt(exp(ln(A)+ln(B))/2) = sqrt((A*B)/2) Link to comment Share on other sites More sharing options...

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