››Convert Pascal-second to centipoise
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For example, ISO viscosity grade 32 relates to the viscosity bracket 28.8 to 35.2 mm2/s, the mid point of which is 32.0 mm2/s. This is illustrated in the table below, which. 10.0 1.83 52 58.8 33.0 4.45 136 154.2 10.2 1.85 52.5 59.5 34.0 4.6 140 158.7 10.4 1.87 53 60.2 35.0 4.7 144 163.2. Installing Viscosity (Windows) 1. Exit any old copies of Viscosity that are running. Open the Viscosity Installer.exe file in your Downloads folder. Click Yes to the User Access Control prompt. Follow the instructions displayed in the Setup Wizard. Launch Viscosity from your Start menu. Detailed Instructions. Viscosity is a material property which describes the resistance of a fluid to shearing flows. Wd smart drive mac. It corresponds roughly to the intuitive notion of a fluid's 'thickness'. C 3 H 8 O 1.945 2-Propanol (isopropyl alcohol) C 3 H 8 O 2.052 Squalane: C 30 H 62: 31.123 Water H 2 O 0.890. 45.192 Liquids (including liquid metals) Viscosity of water as.
››More information from the unit converter
How many Pa-s in 1 centipoise?The answer is 0.001.
We assume you are converting between Pascal-second and centipoise.
You can view more details on each measurement unit:
Pa-s orcentipoise
The SI derived unit for dynamic viscosity is the pascal second.
1 pascal second is equal to 1 Pa-s, or 1000 centipoise.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between Pascal seconds and centipoise.
Type in your own numbers in the form to convert the units!
››Quick conversion chart of Pa-s to centipoise
1 Pa-s to centipoise = 1000 centipoise
2 Pa-s to centipoise = 2000 centipoise
3 Pa-s to centipoise = 3000 centipoise
4 Pa-s to centipoise = 4000 centipoise Statsey 1 0 7 – app usage statistics.
5 Pa-s to centipoise = 5000 centipoise
6 Pa-s to centipoise = 6000 centipoise
7 Pa-s to centipoise = 7000 centipoise
Ymailtab 1 5 – quickly access your yahoo mail. 8 Pa-s to centipoise = 8000 centipoise
9 Pa-s to centipoise = 9000 centipoise
10 Pa-s to centipoise = 10000 centipoise Memorytamer 1 5 1 – automatic memory freeing applied.
››Want other units?
You can do the reverse unit conversion fromcentipoise to Pa-s, or enter any two units below:
››Common dynamic viscosity conversions
Pa-s to decipoise
Pa-s to kilogram/meter hour
Pa-s to slug/foot second
Pa-s to dyne second/square centimeter
Pa-s to newton second/square meter
Pa-s to kilogram-force second/square meter
Pa-s to poundal hour/square foot
Pa-s to pound/foot second
Pa-s to poiseuille
Pa-s to gram/centimeter second
››Definition: Centipoise
A unit of dynamic viscosity in the CGS system of units. A centipoise is one millipascal second (mPa·s) in SI units. Water has a viscosity of 0.0089 poise at 25 °C, or 1 centipoise at 20 °C.
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ConvertUnits.com provides an onlineconversion calculator for all types of measurement units.You can find metric conversion tables for SI units, as wellas English units, currency, and other data. Type in unitsymbols, abbreviations, or full names for units of length,area, mass, pressure, and other types. Examples include mm,inch, 100 kg, US fluid ounce, 6'3', 10 stone 4, cubic cm,metres squared, grams, moles, feet per second, and many more!
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Units in pipe flow calculator: cfs=cubic foot per second, cm=centimeter, cP=centipoise, cSt=centistoke, ft=foot, g=gram, gal=U.S. gallon, gpd=U.S. gallon per day, gpm=U.S. gallon per minute, hp=horsepower, kg=kilogram, lb=pound, m=meter, min=minute, N=Newton, Pa=Pascal, psi=lb/inch2, s=second
Viscosity 1 8 45 Cm
Pipe flow calculator topics: Pipe Flow ScenariosEquationsMinor Loss CoefficientsCommon QuestionsReferences
Introduction
Our pipe flow calculator is based on the steady state incompressible energy equation utilizing Darcy-Weisbach friction losses as well as minor losses. The pipe flow calculation can compute flow rate, velocity, pipe diameter, elevation difference, pressure difference, pipe length, minor loss coefficient, and pump head (total dynamic head). The density and viscosity of a variety of liquids and gases are coded into the pipe flow program, but you can alternatively select 'User defined fluid' and enter the density and viscosity for fluids not listed. Though some industries use the term 'fluid' when referring to liquids, we use it to mean either liquids or gases in our pipe flow calculator. The pipe flow calculation allows you to select from a variety of piping scenarios which are discussed below.
Comments on gas flow
As mentioned above, the equations that our pipe flow calculator is based upon are for incompressible flow. The incompressible flow assumption is valid for liquids. It is also valid for gases if the pressure drop is less than 40% of the upstream pressure. Crane (1988, p. 3-3) states that if the pressure drop is less than 10% of the upstream gage pressure (gage pressure is pressure relative to atmospheric pressure) and an incompressible model is used, then the gas density should be based on either the upstream or the downstream conditions. If the pressure drop is between 10% and 40% of the upstream gage pressure, then the density should be based on the average of the upstream and downstream conditions. If the pressure drop exceeds 40% of the upstream gage pressure, then a compressible pipe flow model, like the Weymouth, Panhandle A, or Panhandle B should be used.
Pipe Flow Scenarios
Since boundary conditions affect the flow characteristics, our pipe flow calculator allows you to select whether your locations 1 and 2 are within pipes, at the surface of open reservoirs, or in pressurized mains (same as pressurized tank). If there is no pump between locations 1 and 2, then enter the pump head (Hp) as 0.
Pipe flow calculator topics: Pipe Flow ScenariosEquationsMinor Loss CoefficientsCommon QuestionsReferences
Introduction
Our pipe flow calculator is based on the steady state incompressible energy equation utilizing Darcy-Weisbach friction losses as well as minor losses. The pipe flow calculation can compute flow rate, velocity, pipe diameter, elevation difference, pressure difference, pipe length, minor loss coefficient, and pump head (total dynamic head). The density and viscosity of a variety of liquids and gases are coded into the pipe flow program, but you can alternatively select 'User defined fluid' and enter the density and viscosity for fluids not listed. Though some industries use the term 'fluid' when referring to liquids, we use it to mean either liquids or gases in our pipe flow calculator. The pipe flow calculation allows you to select from a variety of piping scenarios which are discussed below.
Comments on gas flow
As mentioned above, the equations that our pipe flow calculator is based upon are for incompressible flow. The incompressible flow assumption is valid for liquids. It is also valid for gases if the pressure drop is less than 40% of the upstream pressure. Crane (1988, p. 3-3) states that if the pressure drop is less than 10% of the upstream gage pressure (gage pressure is pressure relative to atmospheric pressure) and an incompressible model is used, then the gas density should be based on either the upstream or the downstream conditions. If the pressure drop is between 10% and 40% of the upstream gage pressure, then the density should be based on the average of the upstream and downstream conditions. If the pressure drop exceeds 40% of the upstream gage pressure, then a compressible pipe flow model, like the Weymouth, Panhandle A, or Panhandle B should be used.
Pipe Flow Scenarios
Since boundary conditions affect the flow characteristics, our pipe flow calculator allows you to select whether your locations 1 and 2 are within pipes, at the surface of open reservoirs, or in pressurized mains (same as pressurized tank). If there is no pump between locations 1 and 2, then enter the pump head (Hp) as 0.
Steady State Energy EquationBack to Pipe Flow CalculatorReferences
The first equation shown is the steady state energy equation for incompressible pipe flow. The left side of the equation contains what we call the driving heads. These heads include heads due to a pump (if present), elevation, pressure, and velocity. The terms on the right side are friction loss and minor losses. Friction losses are computed using the Darcy Weisbach friction loss equation. The friction factor for turbulent flow is found using the Colebrook equation which represents the Moody diagram. f is the Moody friction factor. The pipe flow equations are well-accepted in the field of fluid mechanics and can be found in many references such as Cimbala and Cengel (2008), Munson et al. (1998), and Streeter et al. (1998).
https://downdfile838.weebly.com/shortcut-for-bullet-point-mac-word.html. The pipe flow equations above are dimensionally correct which means that the units for the variables are consistent. A consistent set of English units would be mass in slugs, weight and force in pounds, length in feet, and time in seconds. SI units are also a consistent set of units with mass in kilograms, weight and force in Newtons, length in meters, and time in seconds. Our pipe flow calculator allows you to enter a variety of units and automatically performs the unit conversions.
A = Pipe cross-sectional area, ft2 or m2.
D = Pipe diameter, ft or m.
Driving Head (DH) = left side of the first equation (or right side of the equation), ft or m. This is not total dynamic head.
e = Pipe surface roughness, ft or m. Select from the drop-down menu in our calculation. Additional values.
f = Moody friction factor, unit-less. Do not confuse the Moody f with the Fanning friction factor. f = 4 fFanning .
g = acceleration due to gravity = 32.174 ft/s2 = 9.8066 m/s2.
hf = Major (friction) losses, ft or m.
hm = Minor losses, ft or m.
Hp = Pump head (also known as Total Dynamic Head), ft or m.
Km = Sum of minor losses coefficients. See table below.
log = Common (base 10) logarithm.
Pump Power (computed by program) = SQHp, lb-ft/s or N-m/s. Theoretical pump power. Does not include an inefficiency term. Note that 1 horsepower = 550 ft-lb/s.
P1 = Upstream pressure, lb/ft2 or N/m2.
P2 = Downstream pressure, lb/ft2 or N/m2.
Re = Reynolds number, unit-less.
Q = Flow rate in pipe, ft3/s or m3/s.
S = Weight density, lb/ft3 or N/m3.
V = Velocity in pipe, ft/s or m/s.
V1 = Upstream velocity, ft/s or m/s.
V2 = Downstream velocity, ft/s or m/s.
Z1 = Upstream elevation, ft or m.
Z2 = Downstream elevation, ft or m.
v = Kinematic viscosity, ft2/s or m2/s. Note that kinematic viscosity = dynamic viscosity divided by density.
All of our calculations utilize double precision. Newton's method (a numerical method) is used to solve the Colebrook equation accurate to 8 significant digits. A cubic solver (numerical method) is used for 'Solve for V, Q,' 'Q known. Solve for Pipe Diameter,' and 'V known. Solve for Pipe Diameter.' More than one solution is possible for these three calculations since there could be a result in the laminar range and the turbulent range. There may even be two possible results in the laminar range for 'Solve for V, Q' if scenario D or G is selected. All of the possible solutions are computed and output. If multiple solutions are computed, please click in the numeric field and click the right arrow key to see all of the digits. If you have selected 'Q known. Solve for Pipe Diameter,' and scenario D or G, you must enter Km>1. All calculations are analytic (closed form) except as mentioned here.
Table of Minor Loss Coefficients for Pipe Flow Calculator (Km is unit-less) ReferencesBack to Pipe Flow Calculator
| Fitting | Km | Fitting | Km |
| Valves: | Elbows: | ||
| Globe, fully open | 10 | Regular 90°, flanged | 0.3 |
| Angle, fully open | 2 | Regular 90°, threaded | 1.5 |
| Gate, fully open | 0.15 | Long radius 90°, flanged | 0.2 |
| Gate 1/4 closed | 0.26 | Long radius 90°, threaded | 0.7 |
| Gate, 1/2 closed | 2.1 | Long radius 45°, threaded | 0.2 |
| Gate, 3/4 closed | 17 | Regular 45°, threaded | 0.4 |
| Swing check, forward flow | 2 | ||
| Swing check, backward flow | infinity | Tees: | |
| Line flow, flanged | 0.2 | ||
| 180° return bends: | Line flow, threaded | 0.9 | |
| Flanged | 0.2 | Branch flow, flanged | 1.0 |
| Threaded | 1.5 | Branch flow, threaded | 2.0 |
| Pipe Entrance (Reservoir to Pipe): | Pipe Exit (Pipe to Reservoir) | ||
| Square Connection | 0.5 | Square Connection | 1.0 |
| Rounded Connection | 0.2 | Rounded Connection | 1.0 |
| Re-entrant (pipe juts into tank) | 1.0 | Re-entrant (pipe juts into tank) | 1.0 |
Common Questions about the Pipe Flow CalculatorBack to Pipe Flow Calculator
I took fluid mechanics and learned about pipe flow calculations a long long time ago. What is head? Why does it have units of length? Head is energy per unit weight of fluid (i.e. Force x Length/Weight = Length). The pipe flow calculator on this page solves the energy equation (shown above); we call energy 'head.'
Why is Pressure=0 for a reservoir? A reservoir is open to the atmosphere, so its gage pressure is zero.
Why is Velocity=0 for a reservoir? This is a common assumption in fluid mechanics and is based on the fact that a reservoir has a large surface area. Therefore, the liquid level drops very little even if a lot of liquid flows out of the reservoir. A reservoir may physically be a lake or a large diameter tank.
What is a 'main' and a 'lateral'? A 'main' is a large diameter supply pipe that has many smaller diameter 'laterals' branching off of it. In fluid mechanics, we set V=0 for the main since it has a large diameter (relative to the lateral) and thus a very small velocity. To further justify the V=0 assumption, the main's pressure is typically high, so the velocity head in the main is negligible. The main is drawn such that it is coming out of your computer monitor.
Can I calculate pipe flow between two reservoirs using either Scenario B or E? Yes, you can. If using Scenario E, just set P1-P2=0. Scenario B automatically sets P1-P2=0.
Can I calculate pipe flow between two mains using either Scenario B or E? Only if the pressure is the same in both mains.
How do I model a pipe discharging freely to the atmosphere? Use Scenario A, C, or F. Since P2=0 (relative to atmospheric pressure), P1-P2 that is input or output will be P1.
What are minor losses? Minor losses in pipe flow calculations are head (energy) losses due to valves, pipe bends, pipe entrances (for fluid flowing from a tank to a pipe), and pipe exits (fluid flowing from a pipe to a tank), as opposed to a major loss which is due to the friction of fluid flowing through a length of pipe. Minor loss coefficients (Km) are tabulated below. For our pipe flow calculator, all of the pipes have the same diameter, so you can add up all your minor loss coefficients and enter the sum in the Minor Loss Coefficient input box.
Why do I sometimes get the message when running the pipe flow calculator, 'Infeasible Input'? The governing equations for fluid flow must be satisfied. Fluids must flow from higher energy to lower energy; driving head must always be > 0. Pipe roughness, fluid viscosity, pipe diameter, and velocity must be such that the Reynolds number is <=108 and other conditions shown with the pipe flow equations below are satisfied. It is possible to enter values into the pipe flow calculator that are not physically or mathematically feasible.
I'm confused about pumps. Only input Pump Head if the pump is between points 1 and 2. Otherwise, enter 0 for Pump Head. Pump Head, Hp, is also known as total dynamic head.
Your pipe flow calculator is great! What are its limitations? Pipes must all have the same diameter. Pump curves cannot be implemented.
What is Driving Head? See above in the variable definitions.
Pipe Flow Calculator ReferencesBack to Calculation
Cimbala, John M. and Yunus A. Cengel. 2008. Essentials of Fluid Mechanics: Fundamentals and Applications. McGraw-Hill.
Crane Co. 1988. Flow of Fluids through Valves, Fittings, and Pipe. Technical Paper 40 (TP-40). http://www.craneco.com.
Munson, Bruce R. Donald F. Young, and Theodore H. Okiishi. 1998. Fundamentals of Fluid Mechanics. John Wiley and Sons. Inc. 3ed.
Viscosity 1 8 45 Ounces
Streeter, Victor L., E. Benjamin Wylie, and Keith W. Bedford. 1998. Fluid Mechanics. McGraw-Hill. 9ed.
Viscosity 1 8 45 Equals
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