PROGRAM DOCUMENTATION

Software are located in the software directory. Interested users can go to this directory and download the necessary software.

MAIN PROGRAM NAME:

cvort

PURPOSE:

To compute Centrifugal Velocity OR Times for settling specific particles

from a given medium.

PROGRAM SYNOPSIS:

cvort [- mtpv ]

SOURCE LANGUAGE:

This version of the program was written in "c"

COMPILING:

The program can be compiled to run under UNIX

Type the command "cc cvort.c -lm"

The output executable " a.out " should be renamed cvort

DESCRIPTION:

The user may compute the total running time and T - td (time to start

deceleration) for a given particle to be completely settled from a given medium.

When no options are specified, it is assumed that the medium is water at

20 degrees Centigrade and the particle is quartz (sp = 2.65 gm/cc).

The 't' option on the run-line causes a querie for a

temperature between 16-40 degrees Centigrade. The viscosity and specific

gravity of water at that temperature is selected from the program look-up table.

It is not necessary

to know the temperature of any other medium

or water outside the look-up table range since those medium must be described

by specifying the 'm' option on the run-line.

The 'm' option will cause the program to prompt the user for a viscosity (poise)

and a specific gravity (g/cc) of the medium.

The 'p' option is used when the particulate to be settled is not quartz.

The 'v' option will assume the user has a specific total time (with appropriate

acceleration time and deceleration time) and would like to compute a velocity

to affect the separation.

The radius of the finest particle to be settled must be entered in micro-meters.

The user is then prompted for the initial and final distance from the center

of rotation. (Units are inconsequential as the values are used as a ratio.)

When the user is computing the velocity, a total running time (in seconds)

must be entered.

Otherwise, the velocity in revolutions/minute will be requested and the

total time and (T - Td ) will be computed.

The user must also enter the time of acceleration and the time of deceleration

(in seconds).

FILES:

cvort.h - contains the look-up libraries necessary to run the program

cvort.c - uncompiled version of the software

cvortdoc.txt - software documentation

cvort - compiled version of the software

SEE ALSO: ( READ.ME )

DIAGNOSTICS-BUGS:

None known

AUTHOR/MAINTENANCE

Janet J. Fredericks, WHOI , Woods Hole, MA 02543

Lawrence J. Poppe , USGS , Woods Hole, MA 02543