
sampeedit nalika pravaah

gharshan key saath sampeedit nalika pravaah. yeh lekh vicharadhin seema divaaron key kaaran gharshan key saath gais pravaah seey sambandhit haye. yeh samasya manodasha prakaar kii pipe-gharshan samasya key samaan haye, lekin gharshan, gatij oorjaa aur pravaah kii anthelpy mein kaafee badey parivartanon key saath.
mapdand.
nimnalikhit dhaaranaon key saath ack nalika key madhyam seey bahane vaali gais parr vichaar karenh
ganana.
aakriti (daaen) mein dikhaae gaye kshetra a aur lambai dx key ack chhote seey tatva parr vichaar karein. iss tatva parr sanrakshan kaanoonon koo lagu karna,
sootra 1-ghanatva
tatva kii v-gati
aeye-cross sectional kshetra
ρv a = g = sthiraank
sootra _ 2...(dhaarana 1)
sootra _ 3..(1)
tatva parr kull bull koo gati mein parivartan key barabar karke (neuton key dusare niyam kaa paalan karate hue),
sootra _ 4
sootra _ 5..(2)
jahan sootra _ 6 seema divaaron key kaaran katarani tanaav haye aur iss prakaar sootra _ 7 katarani tanaav key kaaran bull haye.
gais kii kull oorjaa
sootra _ 8
sootra _ 9..(3)
aadarsh gais sameekaran key aadhar parr bhee
sootra _ 10..(i)
sootra _ 11..(4)
deewaar katarani aur darcy gharshan kaarak f key beach sambandh dwara diyaa jaataa haye,
sootra _ 12
lekin humm usa sootra koo jaanate hain _ 13 jahan a poorna gais mein dhwani kii gati haye. ...(kha)
isaliye uparokt sameekaran mein parivartit hoe jaataa haye-
sootra _ 14..(5)
jahan ma vaha machini sankhya haye jise usa madhyam mein dhwani key wegg aur vicharadhin vastu key wegg key anupaat key roop mein paribhaashit kiya gayaa haye.ee vee/aeye...(iii)
iss prakaar (i), (ii), (iii) seey
sootra _ 15
sootra _ 16..(6)
ee. kyu. 1 seey 6 taka key charr koo samaapt karke humm nimnalikhit sambandh praapt karate hainh
sootra _ 17
sootra _ 18
sootra _ 19
sootra _ 20
sootra _ 21
uparokt sabhi samikaranon mein sootra _ 23 koo chhodkar sootra _ 22 kaa ack kaarak haye; iss prakaar nimnalikhit katauti kii jaa sakati haih
pravaah key bavjood, machine sankhya 1 kii or neeche kii or jaati haye kyonki entropy saath-saath badhati haye. entropy v/s mack sankhya graph jaisa kii chitra mein dikhaaya gayaa haye (k = 1.4 key liye):
entropy adhikatam maa = 1 parr hoti haye isaliye dhwani bindu antatah dusare niyam key aadhar parr praapt kiya jaataa haye. choonki iss mamle mein sootra _ 24 aur sootra _ 25 pravaah key saath cumm hoe jaate hain, isaliye dhwani gunon (p *, ′ *, t *, sootra _ 26, aur sootra _ 27) koo sandarbh maanaa jaataa haye.
abb,
sameekaran 11 mein herfer karke aur donon pakshon koo ekikrit karke humm paate hain,
sootra _ 28
l * kissy manmaane bindu seey lambai haye jahan mack sankhya maa haye. dhwani kshetra mein, maa = 1. ekikaran kaa parinam nimnalikhit sameekaran mein hotaa haih
sootra _ 29
jahan f-x = 0 seey l * taka kaa ausat gharshan kaarak haye. yahaan d vrittakar nalika kaa vyaas haye; aise mamalon mein jahan nalika vrittakar cross section d = (4 * kshetra)/paridhi kaa naheen haye.
gharshan key kaaran dumm ghutana.
nalika kaa ghutana mool roop seey nalika dravyamaan pravaah mein kamee haye. pravaah kii sthiti badal jaati haye yadi vaastavik lambai l anumaanit adhikatam lambai l * seey adhik haye, aur dou vargeekaran hainh
subsonic inlet.
yadi l> l * (Ma1), tou pravaah taba taka dheema hoe jaataa haye jaba taka kii ack inlet mack sankhya m2 iss tarah seey naheen pahunch jaati kii l = l * (m2). nikas pravaah dhwani haye, aur dravyamaan pravaah gharshan ghutan seey cumm hoe gayaa haye. nalika kii lambai mein aur vriddhi seey inlet maa aur dravyamaan pravaah mein kamee aatee rahegi.
supersonic inlet.
gharshan kaa supersonic nalika pravaah parr badaa prabhaav padata haye. yahaan taka kii ack anant inlet mack sankhya bhee f = 0.02 key liye kewal 41 vyaas mein dhwani sthitiyon mein cumm hoe jaayegi. iss sthiti key liye ack udaaharan inlet maa = 3 aur f = 0.02 parr vichaar karein. yadi ell 26 dee seey aage badhaaya jaataa haye, tou pravaah ghutan naheen karega, lekin baad key subsonic gharshan pravaah key liye thheek sahee jagah parr ack samanya jhataka lagega joe nikas parr thheek seey sonic bunn jaayega. antatah, ack lambi nully feed nozzle galey koo dabaa degi, iss prakaar nully dravyamaan pravaah koo cumm curr degi. iss prakaar, supersonic gharshan pravaah key pattern koo badal detaa haye yadi l> l * lekin taba taka pravaah koo dabaa naheen detaa haye jaba taka kii
l, l * seey bahut badaa haye.

