tag:blogger.com,1999:blog-1308139960516080412.post2086199257535490192..comments2022-12-06T01:14:42.703-06:00Comments on Christopher Simpson: Derivation and Nondimensionalization of the Orr-Sommerfeld EquationChristopherhttp://www.blogger.com/profile/14768438682715700162noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-1308139960516080412.post-28061120820705508662022-06-17T19:22:53.290-05:002022-06-17T19:22:53.290-05:00Hi Christopher, I'd like to mention one issue ...Hi Christopher, I'd like to mention one issue I have when skimming your derivation, I found in eq.(9), at he RHS inside the first parenthesis, the second term has the "alpha^2" as the factor, however, in eq.(10) I noticed it has changed to the "alpha". why?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-16308019319793725172020-11-28T19:08:30.124-06:002020-11-28T19:08:30.124-06:00Thanks Chris, amazing work. Only thing: I noticed ...Thanks Chris, amazing work. Only thing: I noticed a typo in equations 10 and 11, where your alpha_bar term in the second parenthesis goes from a power to 2 to a power of 1.Adrianhttps://www.blogger.com/profile/18310378835689358907noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-51343489766712592092020-11-07T03:42:37.032-06:002020-11-07T03:42:37.032-06:00Why we eliminate pressure term??? Why we eliminate pressure term??? Anonymoushttps://www.blogger.com/profile/03836036759928984960noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-67328373897247388732020-10-27T05:12:08.165-05:002020-10-27T05:12:08.165-05:00This is a good one Christopher. Pls how do we deri...This is a good one Christopher. Pls how do we derive the fluctuating x and y momentum equation?Anonymoushttps://www.blogger.com/profile/01581652169409555796noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-42420338530822501952020-10-06T01:42:14.141-05:002020-10-06T01:42:14.141-05:00it is due to small disturbance assumption, meaning...it is due to small disturbance assumption, meaning that the problem is linearized, so any products of primes are neglected (small term squared).Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-34261565108853950732020-10-06T01:41:20.477-05:002020-10-06T01:41:20.477-05:00it's 2D and the body force (gravity) is neglec...it's 2D and the body force (gravity) is neglected, such as in flow along straight pipe without any elevation change.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-38249616578988112872020-08-12T14:22:52.765-05:002020-08-12T14:22:52.765-05:00Thanks a lot this help for examination because com...Thanks a lot this help for examination because complete calculation available but I follow viscous fluid book by white where we observe many difficulties about calculation Anonymoushttps://www.blogger.com/profile/07689642954188232554noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-63666403841005066922018-06-04T14:17:36.774-05:002018-06-04T14:17:36.774-05:00Hello Christopher, I'd like to ask whether thi...Hello Christopher, I'd like to ask whether this is for 3D or 2D? And where does the gravity term ( gravity x density) from the navier stokes equation disappear? This is really easy to understand, thank you!<br />MardYhttps://www.blogger.com/profile/12632974257517779847noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-10915482255229571042018-05-26T22:03:17.795-05:002018-05-26T22:03:17.795-05:00Really thank you Christopher from Japan!Really thank you Christopher from Japan!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-3976701225255285452018-04-16T12:06:02.182-05:002018-04-16T12:06:02.182-05:00Thanks Thanks Anonymoushttps://www.blogger.com/profile/11388869077506267450noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-7419968755014074632017-06-12T08:11:24.611-05:002017-06-12T08:11:24.611-05:00Hi Christopher. I really don't know how u^\pri...Hi Christopher. I really don't know how u^\prime.\dfrac{\partial u^\prime}{\parital x} and v^\prime.\dfrac{\partial u^\prime}{\parital x} are gone at the 2nd equation, in (1)? I'll very happy if you explain it to me. Thank you so much.Anonymoushttps://www.blogger.com/profile/11376210685409492008noreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-64116562223881931952016-05-22T09:41:38.075-05:002016-05-22T09:41:38.075-05:00Thanks a ton, Christopher.Thanks a ton, Christopher.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1308139960516080412.post-32901575134981073732015-12-07T11:01:27.257-06:002015-12-07T11:01:27.257-06:00Hello Christopher, thanks a lot. This will help me...Hello Christopher, thanks a lot. This will help me a lot in my exam.Anonymoushttps://www.blogger.com/profile/09927556059085475593noreply@blogger.com