 ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ  Package-day is based upon the crystallisation... ...and the precipitation is required... ...so that is why sometimes when there is a chance of... ...the breakdown of those crystals, we cannot use the radial flow in pallors. That is why we use the axial flow in pallors. So they are widely used in case when we culture the animal cells.... माईकोंने उसकास सकता साही्मल्दा wounding process , only to మికిలసింట్సి ఉర్పతిస్సికిర్. మంనిసారకి లౚలుచికిటాలి పఱికిధటనియనికింటె లారిమరాలుంటా. మికిక౿టారాకిసికికి. चूई किसम जाओ कर्तान जाग के लिएón songs next चीज्या कर्तान जाग कर्य diyorिitions First चा fuels चीज्या कर्तान जाग कर्छ़ा कर्तान ज� light चा unstable कर्तान जाग चीज।. चवME चा eventually कर् vull वेली aus courogue kpl kpl ौl �kn q hop ॐ ॐ ॐ ॐ ॐ ॉ ॐ ॐ ॐ ॐ ॐ ॐ ौ ै ौ ॐ ॐ Р ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ ॐ The liquid is pushed down. You can see here easily that when it goes, first of in first stress then the media pushed down and then with the force that tend to go upward. So that's why there is a gradual cyclone type movement of the medium inside the fermenter. वर्वार आजा गोए थीसे चीरग नहीं वाव आफ़ा रवा के है कोत इसी ज़ोग मुए बाव को लोगग feller work. वह दोगगगगगगगगगगग ता हो तो अजी है कि के लेँ कर और गगगगग गगगगगगगग छी्वगग बब आप दाः. you can see in this picture that that is mostly look same as we have in our ceiling fan blades. So, that is why there is a low shear conditions. So, that is why they tend to have a less breakdown in the air bubbles. So, when there is a problem in radial flow impellers when there is a maximum shear but in case of axial flow when there is a less shear and we want to use having a less shear and then we have a maximum mixing of the air bubbles or air into the liquid medium then there is choice than having such another kind of the impellers. So, that is known as the impeller that mostly use in such cases that is intermeg impellers that is actually the axial flow impellers you can see in this picture the center of there this highlighted red line you see that is basically designed just like the axial flow impellers but on the edge of this there is an other rotating design that when the radial when the axial flow impellers moves that push the medium toward the bottom of the vessel but these moved and then they help to break down the air bubbles into the smaller just to increase the surface area. So, that is the problem just to check the problem that exists in axial flow. So, by this kind of interming impellers we can remove we can have avoid that problem of low shearing effect. So, the agitation system has as we know that that is have a two impellers that mixing of the bottom impellers has a large axial flow section and the tip impeller contain a finger like extension which create a turbulence way for breaking the bubbles. So, as the high shear region exist only at the tip. So, the overall shear condition in the reactor are lower than would be generated by the radial flow impellers such as as in case of the restricted bind. So, the interming impellers are used widely for the agitation and the aeration of those fermentation in which mostly the filamentous organism as we can say that fungal fermentations. So, in this slide you can see there are different types of the impellers disc turbine impellers how they look like and then van disc when such kind of that so open turbine. So, these are different designs of impellers which are mostly used in the fermentation. So, here you can see that three dimensional diagrams of six blade disc turbine and six curved blade just the difference between these two impellers are this one disc turbine have the state blades, but in the lower case you can see there is a curve of the blades. So, minor difference between these two, but these two categories mostly come in the radial flow impellers. In this diagram you can see the axial flow impellers having different shape of the blades. So, these are the different impellers which are used in designing of the fermentor vessels. So, because the mixing in a fermentation process is very critical. So, that is why while designing the fermentation fermentor then we have to be very critical while fixing the impellers.