MANPIP
04-09-2014, 08:05 AM
Post: #10
 Thomas Klemm Senior Member Posts: 2,105 Joined: Dec 2013
RE: MANPIP
(04-08-2014 09:29 PM)Jerussi Wrote:  I left the Q= out of "The program would prompt you for "n=", "D=", "S=", "y=" and you would enter the knowns and R/S through the unknowns." it should have read: The program would prompt you for "n=", "Q=", "D=", "S=", "y=" and you would enter the knowns and R/S through the unknowns.
That makes more sense. Was it possible to solve for D or y? Because that appears to be a little more difficult.

Quote:Qp and Qf are both Q (flow in cubic feet/sec)
Qp is partial flow and is derived from the Manning's equation.
Would you enter Qp in the program when prompted for "Q="?

Quote:Qf is full flow where the equation changes to Q=VA, where V is velocity in Ft/sec and A is the cross sectional Area of the inside of the pipe in Feet.
Does that mean: $$Qf=V\cdot\frac{\pi D^2}{4}$$?

Could you provide some examples for the calculations?

Though I'm sure this isn't yet what you had here's a first approach:
Code:
LBL "MANNING" "N = ?" PROMPT FS?C 22 STO 00 "D = ?" PROMPT FS?C 22 STO 01 "S = ?" PROMPT FS?C 22 STO 02 "Y = ?" PROMPT FS?C 22 STO 03 1 RCL 03      ; y 2 * RCL 01      ; d / - ACOS 2 * STO 04      ; theta = 2 arccos(1 - 2 y / d) ENTER SIN - RCL 01      ; d X^2 * 8 / STO 05      ; A = (theta - sin(theta)) d^2 / 8 RCL 04      ; theta / RCL 01      ; d / 2 *           ; R = A / P LASTX       ; 2 3 / Y^X         ; R^(2/3) RCL 02      ; S SQRT * RCL 00      ; n / 1.49        ; k * STO 06      ; V = k R^(2/3) S^(1/2) / n RCL 05      ; A * STO 07      ; Q = V A "N = " ARCL 00 PROMPT "D = " ARCL 01 PROMPT "S = " ARCL 02 PROMPT "Y = " ARCL 03 PROMPT "A = " ARCL 05 PROMPT "V = " ARCL 06 PROMPT "Q = " ARCL 07 PROMPT END

You are only asked for n, D, S and y. But you don't have to re-enter them when they aren't different from the last calculation. Only A, V and Q are calculated.

Cheers
Thomas

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 Messages In This Thread MANPIP - Jerussi - 04-07-2014, 06:00 PM RE: MANPIP - Thomas Klemm - 04-07-2014, 06:53 PM RE: MANPIP - Jerussi - 04-07-2014, 07:35 PM RE: MANPIP - Thomas Klemm - 04-07-2014, 11:05 PM RE: MANPIP - Jerussi - 04-07-2014, 07:37 PM RE: MANPIP - Jerussi - 04-07-2014, 07:38 PM RE: MANPIP - Jerussi - 04-08-2014, 06:01 PM RE: MANPIP - Jerussi - 04-08-2014, 06:04 PM RE: MANPIP - Jerussi - 04-08-2014, 09:29 PM RE: MANPIP - Thomas Klemm - 04-09-2014 08:05 AM RE: MANPIP - Jerussi - 04-09-2014, 02:13 PM RE: MANPIP - Thomas Klemm - 04-09-2014, 05:20 PM RE: MANPIP - Jerussi - 04-09-2014, 02:28 PM RE: MANPIP - Thomas Klemm - 04-09-2014, 06:58 PM RE: MANPIP - Thomas Klemm - 04-12-2014, 04:58 AM RE: MANPIP - Jerussi - 04-09-2014, 08:20 PM RE: MANPIP - Thomas Klemm - 04-12-2014, 04:37 AM RE: MANPIP - Jerussi - 04-09-2014, 09:50 PM RE: MANPIP - Thomas Klemm - 04-10-2014, 08:56 AM RE: MANPIP - Jerussi - 04-10-2014, 12:28 PM RE: MANPIP - Thomas Klemm - 04-12-2014, 05:01 AM RE: MANPIP - Thomas Klemm - 04-12-2014, 04:29 AM RE: MANPIP - Thomas Klemm - 04-12-2014, 10:54 AM RE: MANPIP - Jerussi - 04-12-2014, 07:07 PM RE: MANPIP - Thomas Klemm - 04-12-2014, 08:26 PM RE: MANPIP - Jerussi - 04-12-2014, 07:21 PM RE: MANPIP - Jerussi - 04-12-2014, 07:40 PM RE: MANPIP - SlideRule - 04-24-2014, 04:01 PM RE: MANPIP - Jerussi - 04-12-2014, 08:31 PM RE: MANPIP - Jerussi - 04-22-2014, 05:18 PM RE: MANPIP - Jerussi - 04-24-2014, 04:15 PM RE: MANPIP - Ángel Martin - 04-27-2014, 06:58 AM RE: MANPIP - Thomas Klemm - 04-28-2014, 08:54 PM RE: MANPIP - SlideRule - 04-27-2014, 12:05 PM RE: MANPIP - Jerussi - 04-28-2014, 02:35 PM RE: MANPIP - Jerussi - 04-28-2014, 02:42 PM

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