flush_time: Flush time
In nicholascarey/respfun: Collection of useful functions for respirometry data and experiments
flush_time R Documentation
Flush time
Description
Calculates the time taken to flush a respirometer with new
water.
Usage
flush_time(volume, flow, tolerance)
Arguments
volume
numeric. Volume of the respirometer in L.
flow
numeric. Flow rate of the input of new water in L/s.
tolerance
numeric. Proportion of the volume to be exchanged. See
Details.
Details
flush_time calculates the time taken to flush a respirometer with
new water. It requires the volume of the respirometer (in L) and the flow
rate (in L/s) of the input of new water.
The function calculates the time in seconds to exchange the proportion of
water described by the tolerance input, which by default is 0.99. That
is, the function calculates the time taken to exchange 99% of the water.
The tolerance is required because of mixing during the exchange.
Because old and new water are always mixing, the exchange of water is
asymptotic: you can never replace 100% of the old water; there will be an
ever decreasing proportion of it remaining (down to the final molecule,
assuming perfect mixing). For all practical purposes, a tolerance value
of 0.99 is sufficient. It is also important to note that the function
takes no account of any shared reservoir of water, that is when the 'old'
water is flushed out into the source of the 'new' water.
Value
Time in seconds for the tolerance proportion of the volume to be
exchanged.
Author(s)
Nicholas Carey - nicholascarey@gmail.com
Examples
## How long to exchange 99% of a 10L respirometer when the input pump has
## a flow rate of 0.15 L/s
flush_time(volume = 10, flow = 0.15, tolerance = 0.99)
nicholascarey/respfun documentation built on June 15, 2025, 11:46 a.m.
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| flush_time | R Documentation |
Flush time
Description
Calculates the time taken to flush a respirometer with new water.
Usage
flush_time(volume, flow, tolerance)
Arguments
volume |
numeric. Volume of the respirometer in L. |
flow |
numeric. Flow rate of the input of new water in L/s. |
tolerance |
numeric. Proportion of the |
Details
flush_time calculates the time taken to flush a respirometer with
new water. It requires the volume of the respirometer (in L) and the flow
rate (in L/s) of the input of new water.
The function calculates the time in seconds to exchange the proportion of
water described by the tolerance input, which by default is 0.99. That
is, the function calculates the time taken to exchange 99% of the water.
The tolerance is required because of mixing during the exchange.
Because old and new water are always mixing, the exchange of water is
asymptotic: you can never replace 100% of the old water; there will be an
ever decreasing proportion of it remaining (down to the final molecule,
assuming perfect mixing). For all practical purposes, a tolerance value
of 0.99 is sufficient. It is also important to note that the function
takes no account of any shared reservoir of water, that is when the 'old'
water is flushed out into the source of the 'new' water.
Value
Time in seconds for the tolerance proportion of the volume to be
exchanged.
Author(s)
Nicholas Carey - nicholascarey@gmail.com
Examples
## How long to exchange 99% of a 10L respirometer when the input pump has
## a flow rate of 0.15 L/s
flush_time(volume = 10, flow = 0.15, tolerance = 0.99)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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