0
What else can I help you with?
What are examples of laminar and turbulent flow?
The Reynolds number, Re = VD/υ, can be used to measure the laminarity of flow. The smaller the Reynolds number, the more laminar the flow. Therefore, to achieve better laminar flow, V and D (velocity of fluid and diameter of pipe) should be small and υ, the kinematic viscosity of the fluid, should be large. Therefore, since pipe diameter and viscosity is fixed in this circumstance, the slower the velocity of the flow, the more laminar the flow. Open the faucet to a small degree and the flow will be laminar. Turn the facet open fully will (for some faucets) cause turbulent flow depending on the maximum velocity of water allowed by the faucet.
What are possible causes of laminar flow in a convector pipe of a radiant panel system?
The cause can be easily found by checking Hazen -williams formula's
Will water flow more easily though a wide pipe or a narrow pipe?
Water will flow more easily through a wide pipe than a narrow pipe. This is because a wider pipe offers less resistance to the flow, allowing a greater volume of water to pass through simultaneously. In contrast, a narrow pipe restricts the flow, creating higher pressure and turbulence, which can impede the movement of water. Therefore, the diameter of the pipe significantly affects the flow rate.
Will water flow more easily through a wide pipe or a narrow pipe?
it would flow more easily through a narrow pipe
What is meant by Hydraulic smooth pipe?
The original answer is incorrect (at least in the North American meaning of the term 'Hydraulically smooth'. Hydraulically smooth mean that the roughness on the wall of the pipe is less than 1/2 of the thickness of the viscous sublayer of the turbulent flow. The viscous sublayer is (well) less than 1% of the pipe diameter. The viscous sublayer thickness is calculated as: t=5D*(8^0.5)/((f^0/5)*Re where t is the thickness, D is the Diameter, f is the Darcy Friction Factor (found from the Moody Diagram or the Colebrook Equation, and Re is the Reynolds number, based upon pipe diameter and the average flow velocity in the pipe. Re = u*D/v u is average velocity v is kinematic viscosity As a last comment on the old response, it is in fact describing the critical flow rate for transition to turbulence (i.e. the flow rate for Re ~= 2300). The exact value for transition to turbulence is dicey to determine, and does, as the answer says, depend on the roughness and disturbances. Further, as the equation for Reynolds number shows, the transition to turbulence also depends on diameter. Laminar (not turbulent) flow is often called 'smooth', and the study of fluid motion is hydraulics, so it's easy to get the meaning of 'hydraulically smooth', mixed up with 'smooth (laminar) flow' *****Old (incorrect) response***** The flow rate inside a pipe that will produce laminar(No turbulence) flow. The physical smoothness plays a part but need not be as smooth as glass. A concrete, cast iron , copper and glass pipe can all produce laminar flow. The flow rate at which turbulence begins (no longer hydraulically smooth) will depend upon the surface texture where rougher surfaces will cause turbulence to occur at lower flow rates compared to a smoother material. Raise the flow rate enough and your will eventually get turbulence. So to have hydraulically smooth pipes you would need to spec no only the material but diameter as well to ensure laminar flow up to the max expected flow rate. Also any turbulence inducing fittings would also be included. For example a bar grate in a storm water system could be installed such that hydraulically smooth flow is maintained for low flow rates. (The water ca easily pass around the bars). During the high flows a storm would produce the bar grate would cause a restriction and you would no longer have smooth flow.
What is the effect that radius changes have on the laminar flow of a fluid?
Increasing the radius of a pipe where laminar flow occurs typically leads to a decrease in the flow velocity needed to maintain laminar flow. This is because the flow rate is proportional to the radius to the power of four in laminar flow conditions. As a result, larger radii usually allow for higher flow rates while still maintaining laminar flow.
Is the flow of water flowing at 2meters per second through 3 inch diameter GI pipe laminar or turbulant flow?
To determine if the flow is laminar or turbulent, we can calculate the Reynolds number (Re). For a 3-inch diameter GI pipe and a flow velocity of 2 meters per second, the Reynolds number is likely to be greater than 4000, indicating turbulent flow. In general, flow is considered laminar if Re is less than 2000 and turbulent if Re exceeds 4000. Given these conditions, the flow is turbulent.
What are examples of laminar and turbulent flow?
The Reynolds number, Re = VD/υ, can be used to measure the laminarity of flow. The smaller the Reynolds number, the more laminar the flow. Therefore, to achieve better laminar flow, V and D (velocity of fluid and diameter of pipe) should be small and υ, the kinematic viscosity of the fluid, should be large. Therefore, since pipe diameter and viscosity is fixed in this circumstance, the slower the velocity of the flow, the more laminar the flow. Open the faucet to a small degree and the flow will be laminar. Turn the facet open fully will (for some faucets) cause turbulent flow depending on the maximum velocity of water allowed by the faucet.
Velocity of a fluid particle at centre of pipe is?
The velocity of a fluid particle at the center of a pipe in a fully developed flow is half of the maximum velocity in the pipe. This is known as the Hagen-Poiseuille flow profile for laminar flow.
What is the flow rate of water through a 20 inch pipe at 2500 psi?
For laminar flow? For a full pipe? for a 3/4-full pipe? For a 1/2-full pipe? It all makes quite a difference. Please repost your question with a little more information. It would also help to for us to know the coefficient of friction of the inside of the pipe.
Is flow in a Venturi tube laminar or turbulent?
Flow in a Venturi tube can be either laminar or turbulent, depending on the flow rate and Reynolds number. At low flow rates, the flow tends to be laminar, while at high flow rates, it can transition to turbulent flow.
What are possible causes of laminar flow in a convector pipe of a radiant panel system?
The cause can be easily found by checking Hazen -williams formula's
Steady flow and non steady examples?
Steady flow: Water flowing through a pipe at a constant rate with uniform velocity is an example of steady flow. Non-steady flow: Waves in the ocean where the water motion is constantly changing in both intensity and direction represent non-steady flow.
Value of friction factor in a pipe?
The friction factor in a pipe depends on the flow regime (laminar or turbulent) and the roughness of the pipe wall. It is typically quantified using dimensionless numbers like Reynolds number and relative roughness. In general, it represents the resistance to flow and is important for calculating pressure drop in pipe systems.
Will water flow out of a pipe if the pipe is covered with water?
Yes, as long as the water coming out of the pipe has a greater pressure than the water that is covering the pipe. If it is the other way around, the water covering the pipe will actually flow into the pipe. Think about it. It just makes sense.
What condition necessary for the sustained flow of water in a pipe?
negative pressure is needed for a sustained flow of water in a pipe.
Will water flow more easily though a wide pipe or a narrow pipe?
Water will flow more easily through a wide pipe than a narrow pipe. This is because a wider pipe offers less resistance to the flow, allowing a greater volume of water to pass through simultaneously. In contrast, a narrow pipe restricts the flow, creating higher pressure and turbulence, which can impede the movement of water. Therefore, the diameter of the pipe significantly affects the flow rate.
