NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2012, 3 (2), P. 37-46
INTERNAL PRESSURE MEASUREMENTS IN MICROCHANNELS OF DIFFERENT SHAPES
Vladimir Aniskin – Khristianovich Institute of Theoretical and Applied Mechanics, Novosibirsk, Russia, senior staff scientist, PhD, aniskin@itam.nsc.ru
Ksenia Adamenko – Khristianovich Institute of Theoretical and Applied Mechanics, Novosibirsk, Russia, senior staff scientist, postgraduate student, adamenko_ksenia@mail.ru
Anatoliy Maslov – Khristianovich Institute of Theoretical and Applied Mechanics, Novosibirsk, Russia, deputy director, PhD, professor, maslov@itam.nsc.ru
This paper presents the experimental results of determining friction factors for two microchannels with circular cross-sections: rectilinear and curvilinear. The inner diameter of the channels is 68.9 and 70.3 μm. The Reynolds numbers ranged from 320 to 3215. Pressure measurements are carried out simultaneously in 16 locations along the straight microchannel
and in 12 locations for the curved microchannel. The friction factor for the straight microchannel is in good agreement with the theoretical value for the round smooth tubes. For the curved microchannel, the friction factor value of the curved section is less than the reference value for smoothly curved tubes. The Reynolds number for the laminar-turbulent
transition in a straight microchannel is 2300–2600. In the curved microchannel the transition is not observed. The length of the developing region was identified, and the inlet minor loss coefficient is calculated.
Keywords: micro flow, microchannel, internal pressure measurements.
UDC 53.083.98+533.6.013.124
Perfect piece of work you have done, this site is really cool with good information.
I simply had to appreciate you once again. I do not know the things that I would have sorted out without these tips shared by you concerning my concern. It has been an absolute hard concern in my position, nevertheless considering this well-written mode you treated the issue made me to jump with joy. Extremely happier for this service and even expect you recognize what a powerful job you happen to be accomplishing educating many others all through your blog post. I am certain you haven’t encountered any of us.
Very nice post. I just stumbled upon your blog and wished to say that I’ve truly enjoyed browsing your blog posts. In any case I will be subscribing to your rss feed and I hope you write again soon!
Would love to incessantly get updated outstanding web site! .
Very interesting information!Perfect just what I was searching for! “You have to be deviant if you’re going to do anything new.” by David Lee.
of course like your website but you need to check the spelling on quite a few of your posts. Several of them are rife with spelling problems and I find it very bothersome to tell the truth nevertheless I’ll surely come back again.
Wonderful site. Lots of useful info here. I¦m sending it to a few buddies ans also sharing in delicious. And of course, thank you to your effort!
Perfect work you have done, this web site is really cool with wonderful information.
I was very happy to find this net-site.I wanted to thanks for your time for this excellent learn!! I positively enjoying each little little bit of it and I have you bookmarked to check out new stuff you blog post.
Wow! Thank you! I continuously wanted to write on my website something like that. Can I take a portion of your post to my website?
Hi, Neat post. There is a problem with your website in internet explorer, would check this… IE still is the market leader and a big portion of people will miss your excellent writing due to this problem.
I’ve been absent for a while, but now I remember why I used to love this site. Thanks , I will try and check back more frequently. How frequently you update your site?
You are my breathing in, I own few blogs and occasionally run out from to brand.
Thanks for the sensible critique. Me and my neighbor were just preparing to do a little research about this. We got a grab a book from our local library but I think I learned more clear from this post. I’m very glad to see such great information being shared freely out there.
Thank you, I have recently been searching for information about this subject for ages and yours is the greatest I’ve found out till now. But, what about the conclusion? Are you certain concerning the supply?
you’re really a good webmaster. The site loading speed is amazing. It seems that you’re doing any unique trick. In addition, The contents are masterpiece. you’ve done a excellent job on this topic!
I was just seeking this info for some time. After 6 hours of continuous Googleing, at last I got it in your web site. I wonder what is the lack of Google strategy that don’t rank this type of informative sites in top of the list. Generally the top websites are full of garbage.
I’m not that much of a internet reader to be honest but your sites really nice, keep it up! I’ll go ahead and bookmark your website to come back later. Cheers
Nice post. I was checking constantly this blog and I’m impressed! Very useful information particularly the last part
I care for such info much. I was seeking this certain information for a long time. Thank you and good luck.
A formidable share, I simply given this onto a colleague who was doing a little evaluation on this. And he in truth purchased me breakfast as a result of I found it for him.. smile. So let me reword that: Thnx for the treat! However yeah Thnkx for spending the time to debate this, I feel strongly about it and love studying more on this topic. If possible, as you turn into expertise, would you thoughts updating your blog with extra details? It’s highly useful for me. Big thumb up for this blog post!
The next time I read a blog, I hope that it doesnt disappoint me as much as this one. I mean, I know it was my choice to read, but I actually thought youd have something interesting to say. All I hear is a bunch of whining about something that you could fix if you werent too busy looking for attention.
I’ve been surfing online greater than three hours as of late, but I by no means found any fascinating article like yours. It’s lovely value enough for me. In my opinion, if all website owners and bloggers made good content as you did, the net shall be much more helpful than ever before.
I like this site because so much useful material on here : D.
You completed a number of nice points there. I did a search on the subject matter and found mainly people will consent with your blog.
Wow, marvelous blog format! How long have you been blogging for? you make running a blog look easy. The full look of your website is excellent, let alone the content!
As I website possessor I believe the content material here is rattling fantastic , appreciate it for your hard work. You should keep it up forever! Good Luck.
Hi there, I found your blog via Google while searching for a related topic, your site came up, it looks good. I’ve bookmarked it in my google bookmarks.
you have a great blog here! would you like to make some invite posts on my blog?
In the great pattern of things you’ll receive a B- with regard to hard work. Where you lost everybody ended up being in your specifics. As people say, the devil is in the details… And it couldn’t be much more true right here. Having said that, let me reveal to you precisely what did work. Your writing is very persuasive and this is possibly the reason why I am taking the effort in order to comment. I do not make it a regular habit of doing that. 2nd, despite the fact that I can certainly notice a leaps in logic you make, I am not really convinced of just how you seem to connect your points which in turn help to make your final result. For the moment I will, no doubt yield to your issue however hope in the foreseeable future you actually connect the facts much better.
I conceive you have mentioned some very interesting details, appreciate it for the post.
I have been exploring for a little for any high-quality articles or blog posts on this kind of area . Exploring in Yahoo I at last stumbled upon this web site. Reading this information So i am happy to convey that I have a very good uncanny feeling I discovered exactly what I needed. I most certainly will make certain to don’t forget this web site and give it a look regularly.
I would like to thnkx for the efforts you have put in writing this blog. I am hoping the same high-grade blog post from you in the upcoming as well. In fact your creative writing abilities has inspired me to get my own blog now. Really the blogging is spreading its wings quickly. Your write up is a good example of it.
Nice blog here! Also your site loads up very fast! What host are you using? Can I get your affiliate link to your host? I wish my web site loaded up as quickly as yours lol
This blog is definitely rather handy since I’m at the moment creating an internet floral website – although I am only starting out therefore it’s really fairly small, nothing like this site. Can link to a few of the posts here as they are quite. Thanks much. Zoey Olsen
An impressive share, I just given this onto a colleague who was doing a bit evaluation on this. And he in reality bought me breakfast as a result of I found it for him.. smile. So let me reword that: Thnx for the deal with! But yeah Thnkx for spending the time to debate this, I feel strongly about it and love reading more on this topic. If possible, as you turn into expertise, would you thoughts updating your blog with extra details? It’s extremely useful for me. Huge thumb up for this blog publish!
I am continuously searching online for posts that can help me. Thank you!
I am curious to find out what blog platform you happen to be using? I’m having some minor security issues with my latest website and I’d like to find something more secure. Do you have any suggestions?