# Question about Hrv's Gamma diff scheme paper

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November 30, 2010, 14:48
Question about Hrv's Gamma diff scheme paper
#1
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Santiago Marquez Damian
Join Date: Aug 2009
Location: Santa Fe, Santa Fe, Argentina
Posts: 418
Rep Power: 15
Hi all, in Hrv's Gamma paper we have:

f_x=fN/PN, then the difference phi_f^{+}-phi_C can be written as:

phi_f^{+}-phi_C=f_x(phi_D-phi_C)

(where P is C and N is D), see attached figure. Nevertheless following the geometrical relationships I then to think that it must be:

(phi_D-phi_C)/PN = (phi_f^{+}-phi_C)/Pf

so that

phi_f^{+}-phi_C=Pf/PN (phi_D-phi_C)

Pf/PN != fN/PN, then I'm missing something...

How I can arrive to Hrv. expression?

Regards.
Attached Images
 figure.jpg (16.3 KB, 25 views)
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Santiago MÁRQUEZ DAMIÁN, Ph.D.
Post-doctoral Fellow
Research Center for Computational Mechanics (CIMEC) - CONICET/FICH-UNL
T.E.: 54-342-4511594 Ext. 1005
Güemes 3450 - (3000) Santa Fe
Santa Fe - Argentina
http://www.cimec.org.ar

 December 10, 2010, 11:06 #2 Senior Member     Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 418 Rep Power: 15 Any clues?? Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Post-doctoral Fellow Research Center for Computational Mechanics (CIMEC) - CONICET/FICH-UNL T.E.: 54-342-4511594 Ext. 1005 Güemes 3450 - (3000) Santa Fe Santa Fe - Argentina http://www.cimec.org.ar

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