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The Reynolds number is the relationship between inertial forces (numerator) and viscious forces (demoninator).
The terms in the numerator are usually the fluid density, velocity, and "characteristic" dimension (which has units of length).
Depending on the type of problem you are trying to solve that characteristic dimension may be a length (flat plate problem) or a diameter (flow in a round tube), or hydraulic diameter (non-circular internal flow).
Since a non-circular cross section has more surface area than a circular cross section area there needs to be a way to account for this difference.
If you use the hydraulic diameter equation to calculate the hy. dia. of a circular cross section, you will get the diameter of the circle.
What else can I help you with?
What is the relation between diameter of a pipe and Reynolds number?
The Reynolds number (Re) is a dimensionless quantity used to predict flow patterns in fluid mechanics, and it is calculated using the formula ( Re = \frac{\rho v D}{\mu} ), where ( \rho ) is the fluid density, ( v ) is the flow velocity, ( D ) is the pipe diameter, and ( \mu ) is the dynamic viscosity of the fluid. As the diameter of the pipe increases, the Reynolds number typically increases, assuming constant flow velocity and fluid properties, indicating a transition from laminar to turbulent flow. Therefore, the diameter of a pipe is directly proportional to the Reynolds number, influencing the flow regime within the pipe.
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.
How do you calculate outside diameter of a steel coil?
To calculate the outside diameter of a steel coil, you first need to determine the inside diameter (ID) and the thickness of the steel material. The outside diameter (OD) can then be calculated using the formula: OD = ID + 2 × thickness. If the coil is wound in layers, you may also need to account for the number of layers by adding the thickness multiplied by the number of layers to the ID.
How do you calculate 45 degree elbow center?
1.Center to face=25,4* the given inche 2.diameter= number of inches /the given inche 3.radius =c to f-diameter 4. Circumference
What is the circumfrence of a circle with a diameter of 6?
Multiply the diameter by the number pi - approximately 3.14.Multiply the diameter by the number pi - approximately 3.14.Multiply the diameter by the number pi - approximately 3.14.Multiply the diameter by the number pi - approximately 3.14.
How do you calculate Reynolds number?
Reynolds' Number. Reynolds number is defined as, Re = ρVmD/μ where Vm is the average velocity at the inlet of a diffuser, D is the diameter (or equivalent diameter) of the diffuser inlet, and ρ and μ the density and viscosity of the test fluid
What is the relation between diameter of a pipe and Reynolds number?
The Reynolds number (Re) is a dimensionless quantity used to predict flow patterns in fluid mechanics, and it is calculated using the formula ( Re = \frac{\rho v D}{\mu} ), where ( \rho ) is the fluid density, ( v ) is the flow velocity, ( D ) is the pipe diameter, and ( \mu ) is the dynamic viscosity of the fluid. As the diameter of the pipe increases, the Reynolds number typically increases, assuming constant flow velocity and fluid properties, indicating a transition from laminar to turbulent flow. Therefore, the diameter of a pipe is directly proportional to the Reynolds number, influencing the flow regime within the pipe.
What is a circumference used for?
To calculate the number of times a diameter can go around the circle
How do you calculate the field diameter of the medium power lens?
The equation goes like this and works for both medium AND high feild diameter : Medium(High) DIA. = Low Diameter / [Med(High)mag/low mag] Brackets () are NOT for multiplication, they are for the other formula.
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 is the f-number equation used in photography to calculate the aperture of a lens?
The f-number equation used in photography to calculate the aperture of a lens is f-number focal length / diameter of the aperture.
What is the phone number of the Reynolds Community Library in Reynolds?
The phone number of the Reynolds Community Library is: 478-847-3468.
What is the f number equation used in photography to calculate the aperture of a camera lens?
The f-number equation used in photography to calculate the aperture of a camera lens is f-number focal length / diameter of the aperture.
How do you calculate the diameter from the circumference?
The Circumference of a Circle when the diameter is a known, fixed number is Pi or about 3.14 multiplied by the Diameter 3.14 x D
What is the Graetz number?
The Graetz number is {(Diameter/Length)*Reynolds#*Prandtl#}^(1/3) It is used to characterize the thermal development of pipe flow: if the Graetz number is less than 1000, the thermal profile is fully developed.
How do you calculate outside diameter of a steel coil?
To calculate the outside diameter of a steel coil, you first need to determine the inside diameter (ID) and the thickness of the steel material. The outside diameter (OD) can then be calculated using the formula: OD = ID + 2 × thickness. If the coil is wound in layers, you may also need to account for the number of layers by adding the thickness multiplied by the number of layers to the ID.
What is Mark Reynolds's number on the Milwaukee Brewers?
Mark Reynolds is number 7 on the Milwaukee Brewers.
