Okorder.com is a professional Pvc Pipe supplier & manufacturer, offers integrated one-stop services including real-time quoting and online cargo tracking. We are funded by CNBM Group, a Fortune 500 enterprise and the largest Pvc Pipe firm in China.
If the flow is not turbulent (no high speeds) and incompressible, and the tube is of circular cross section, then Poiseuille Law flow will ensue. In Poiseuille flow through a cylindrical pipe the velocity is largest along the centerline of the tube and diminishes to zero at the inner wall quadratically with distance r: v(r) = c (R^2 - r^2) with c a constant for given viscosity and pressure gradient ( delta(p) / L ) In Poiseuille flow through a cylindrical pipe the rate of flow (volume/second) is given by Qdot, where Qdot = ( Delta(p) pi R^4 ) /(8 eta L). (where eta is the dynamic viscosity of the fluid) Since the pressure difference Delta(p) is the pressure on the piston face - ambient pressure , let's call this (p - p0) , you have p - p0 = ( 8 eta L) * Qdot /(pi R^4) Using this Poiseuille' s Law you can calculate the pressure on the piston. You say at the end of your question that the pressure used to push is kept constant. In that case the flow rate you measure should be inversely proportional to eta and L.s
thats normal! I had two teddy bear hamsters, and they loved sleeping in those plastic tubes! I had those colorful plastic cages that had holes and places for tubes that led to other cages and sleeping nests and hamster wheels and such! Its completely normal(:s
Sure can, even if you've posted this in the wrong category. Funny thing about fire... it likes to burn as long as possible so if the flame makes it's way into the tube... you should duck. Don't be foolish, keep your hands, fingers, eyebrows, etc and quit playing with fire.s
Ok so first off it's not the semen that travels to the egg it's the sperm. Semen is what the sperm are in when they come out. The sperm leaves the semen within a few minutes and travels into the womb. Then it travels thru the tubes to where it expects the egg to be. That can take hours or longer depending upon how well the sperm swim and how straight they go. Most sperm are not shaped right and they get lost or swim around in circles or just plain die before they get there. But since there are millions of them this is not usually a problem. Sperm can live up to 5 days, but 2-3 days is more common.s
The sales of any products are the same, with the technical advantage of the product without the market very popular, the technical content of general commodity sales is difficult. In order to sell goods of ordinary products, manufacturers often use advertising seditious words, exaggerated so-called function, effects, or use the time-honored or related languages, use Chinese style bombing marketing.s
If the supply line of pipes are frozen, you can flush the toilet once and use the water already stored inside the tank. The frozen pipe prevents fresh water from flowing into the t...
Organic fertilizers are fertilizer compounds that contain one or more kinds of organic matter. The ingredients may be animal or vegetable matter or a combination of the two. It is ...
During winter months, water inside plumbing can freeze and, in the worst cases, crack or burst pipes. Not all frozen pipes break, however, and you can prevent major problems by car...
Frozen pipes cause millions of dollars of damage across the United States each year. The sad part -- or the good news, depending on how you look it -- is that frozen pipes are almo...
How do you choose the best lawn fertilizer when there are literally hundreds of fertilizer products to choose from?What do the fertilizer numbers mean?Are organic lawn fertilizers ...
Get Latest Price
Help us more accurately and quickly offer you a quotation by telling us more!