What Is This Tool?
This converter helps you translate dynamic viscosity values from pound/foot/hour, an imperial engineering unit, to poise, a CGS unit widely used in scientific and industrial contexts. It enables straightforward conversion between these measurement systems for fluid resistance to shear flow.
How to Use This Tool?
-
Enter the numeric viscosity value in pound/foot/hour units
-
Select pound/foot/hour as the source unit and poise as the target unit
-
Initiate the conversion to get the equivalent viscosity in poise
-
Use the converted value for engineering calculations or reporting
-
Refer to examples for guidance on interpreting results
Key Features
-
Converts dynamic viscosity from pound/foot/hour [lb/(ft*h)] to poise [P]
-
Supports units commonly used in engineering, tribology, and rheology
-
Easy-to-use interface for inputting values and obtaining results
-
Uses standardized conversion formulas based on defined unit relationships
-
Suitable for translating imperial viscosity data into CGS units
Examples
-
5 pound/foot/hour equals 0.0206689435 poise
-
10 pound/foot/hour equals 0.041337887 poise
Common Use Cases
-
Specifying lubricant or oil viscosity in US-customary engineering documents
-
Conducting viscous flow calculations in piping and rotating equipment
-
Reporting viscosity values of fuels and industrial fluids using hour-based time units
-
Characterizing polymer melt flow in processing operations
-
Translating viscosity measurements for tribology and rheology research
Tips & Best Practices
-
Ensure consistent interpretation of time units between pound/foot/hour and poise
-
Use the exact conversion factor provided to maintain consistency
-
Double-check unit labels when performing viscous flow calculations
-
Reference conversion examples to verify computed values
-
Consider the context of application, especially in lubrication or polymer processing
Limitations
-
Pound/foot/hour uses imperial units with time in hours; poise uses seconds, requiring accurate time unit handling
-
Conversion accuracy depends on proper application of conversion factors
-
Poise units may be less intuitive for those accustomed to SI units like pascal-second
-
This tool does not account for measurement uncertainties or instrument precision
Frequently Asked Questions
-
What does pound/foot/hour measure in viscosity?
-
It measures dynamic viscosity in imperial units, representing a fluid's internal resistance to shear, with force·time per unit area using hours as the time unit.
-
Why convert pound/foot/hour to poise?
-
Conversion facilitates using a widely accepted CGS unit, allowing comparison and standardization in scientific, engineering, and industrial settings.
-
Is poise the same as centipoise?
-
No. Poise is the base CGS dynamic viscosity unit; centipoise is one hundredth of a poise and commonly used in rheological measurements.
Key Terminology
-
Pound/foot/hour [lb/(ft*h)]
-
An imperial dynamic viscosity unit representing internal fluid resistance to shear using force and time (hours), common in US engineering.
-
Poise [P]
-
CGS unit of dynamic viscosity defined as 1 gram per centimeter per second, used to quantify fluid resistance to shear flow.
-
Dynamic Viscosity
-
A measure of a fluid's internal resistance to flow and deformation under shear stress.
-
Shear Stress (τ)
-
Force per unit area exerted parallel to the fluid layer causing deformation.
-
Shear Rate (du/dy)
-
The velocity gradient perpendicular to the direction of shear causing fluid deformation.