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Time varying orifice heights

Posted by Upaka on June 22, 2011 at 12:28pm

Hi,

I just wanted to model the orifices with varying height over the time.

Can I use the control rules to do this task? 

If so, could you please guide me to do it?

 

(No idea about the coding)

 

 

Attached herewith is one of my examples.

f1.inp

 

To seven orifices I would like to introduce time varying heights during the 02:30:00 simulation time period with 15 minute intervals, which really represent control gates to the orifices.

 

If anyone has any idea, share it with me.

Thanks a lot.

Upaka

 

 

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Replies

  • Upaka June 24, 2011 at 8:00am

    OK thanks a lot. I think I have to enter the ratio between the depth at time "T" to full depth (depth at time T / Full depth) as the setting. This then surely going to be between  and 1.

    Thanks again. 

  • Robert Dickinson June 24, 2011 at 7:53am

    The orifice HEIGHT at any time is 

     

    Height - Link[j].xsect.yFull * Link[j].setting

    

    where yFull is the full depth you entered and setting is the current setting based on the RTC rules (the setting is between 0 and 1)

    3293140064?profile=original

    Upaka said:

    Thanks for the reply.

    You mean these opening setting are ratios? 

    Let's think the orifice full open height is 2 m. If I need to open it for 1.5 m, the entered number should be 1.5 / 2 = 0.75. Am I getting it correct? 

  • Upaka June 24, 2011 at 6:57am

    Thanks for the reply.

    You mean these opening setting are ratios? 

    Let's think the orifice full open height is 2 m. If I need to open it for 1.5 m, the entered number should be 1.5 / 2 = 0.75. Am I getting it correct? 

  • Robert Dickinson June 24, 2011 at 6:53am
    The orifice and weir settings can only go from 0 (fully closed) to 1 (fully open).  Your error was that you orifice settings greater than 1 - make them less than 1 and it will work.
  • Upaka June 24, 2011 at 6:11am

    Hi Robert,

    Were you able to find the error of my problem?

    If I have entered the control rules in-correctly, please guide me to enter them correctly.

    Thanks a lot.

    Upaka

     

  • Upaka June 23, 2011 at 11:01am

    This simplification helps me to reduce the number of rules surely. 

    In this sense, I can just implement 10 to 14 rules instead of big numbers.

    Thanks a lot

    Robert Dickinson said:

    You can also combine rules together using an AND statement - here are the rules for all 7 orifices

     

     

    RULE R1a ; Half hour setting
    IF SIMULATION CLOCKTIME = 0:30:00
    OR SIMULATION CLOCKTIME = 1:30:00
    OR SIMULATION CLOCKTIME = 2:30:00
    OR SIMULATION CLOCKTIME = 3:30:00
    OR SIMULATION CLOCKTIME = 4:30:00
    OR SIMULATION CLOCKTIME = 5:30:00
    OR SIMULATION CLOCKTIME = 6:30:00
    OR SIMULATION CLOCKTIME = 7:30:00
    OR SIMULATION CLOCKTIME = 8:30:00
    OR SIMULATION CLOCKTIME = 9:30:00
    OR SIMULATION CLOCKTIME = 10:30:00
    OR SIMULATION CLOCKTIME = 11:30:00
    OR SIMULATION CLOCKTIME = 12:30:00
    OR SIMULATION CLOCKTIME = 13:30:00
    OR SIMULATION CLOCKTIME = 14:30:00
    OR SIMULATION CLOCKTIME = 15:30:00
    OR SIMULATION CLOCKTIME = 16:30:00
    OR SIMULATION CLOCKTIME = 17:30:00
    OR SIMULATION CLOCKTIME = 18:30:00
    OR SIMULATION CLOCKTIME = 19:30:00
    OR SIMULATION CLOCKTIME = 20:30:00
    OR SIMULATION CLOCKTIME = 21:30:00
    OR SIMULATION CLOCKTIME = 22:30:00
    OR SIMULATION CLOCKTIME = 23:30:00
    THEN ORIFICE R1 SETTING = 0.90
    AND ORIFICE R2 SETTING = 0.90
    AND ORIFICE R3 SETTING = 0.90
    AND ORIFICE R4 SETTING = 0.90
    AND ORIFICE R5 SETTING = 0.90
    AND ORIFICE R6 SETTING = 0.90
    AND ORIFICE R7 SETTING = 0.90

    RULE R1b
    ; hour setting
    IF SIMULATION CLOCKTIME = 0:00:00
    OR SIMULATION CLOCKTIME = 1:00:00
    OR SIMULATION CLOCKTIME = 2:00:00
    OR SIMULATION CLOCKTIME = 3:00:00
    OR SIMULATION CLOCKTIME = 4:00:00
    OR SIMULATION CLOCKTIME = 5:00:00
    OR SIMULATION CLOCKTIME = 6:00:00
    OR SIMULATION CLOCKTIME = 7:00:00
    OR SIMULATION CLOCKTIME = 8:00:00
    OR SIMULATION CLOCKTIME = 9:00:00
    OR SIMULATION CLOCKTIME = 10:00:00
    OR SIMULATION CLOCKTIME = 11:00:00
    OR SIMULATION CLOCKTIME = 12:00:00
    OR SIMULATION CLOCKTIME = 13:00:00
    OR SIMULATION CLOCKTIME = 14:00:00
    OR SIMULATION CLOCKTIME = 15:00:00
    OR SIMULATION CLOCKTIME = 16:00:00
    OR SIMULATION CLOCKTIME = 17:00:00
    OR SIMULATION CLOCKTIME = 18:00:00
    OR SIMULATION CLOCKTIME = 19:00:00
    OR SIMULATION CLOCKTIME = 20:00:00
    OR SIMULATION CLOCKTIME = 21:00:00
    OR SIMULATION CLOCKTIME = 22:00:00
    OR SIMULATION CLOCKTIME = 23:00:00
    THEN ORIFICE R1 SETTING = 0.5
    AND ORIFICE R2 SETTING = 0.5
    AND ORIFICE R3 SETTING = 0.5
    AND ORIFICE R4 SETTING = 0.5
    AND ORIFICE R5 SETTING = 0.5
    AND ORIFICE R6 SETTING = 0.5
    AND ORIFICE R7 SETTING = 0.5
  • Upaka June 23, 2011 at 10:59am

    Hi,

    I tried with 12 different orifice heights to the R1 as attached.

    However, I am ending up with an error (please find the word document for the error report).

     

    Could you please let me know the reason for this?

    Thanks a lot

    Upaka

     

     

     

     

     

  • Robert Dickinson June 23, 2011 at 10:57am

    You can also combine rules together using an AND statement - here are the rules for all 7 orifices

     

     

    RULE R1a ; Half hour setting
    IF SIMULATION CLOCKTIME = 0:30:00
    OR SIMULATION CLOCKTIME = 1:30:00
    OR SIMULATION CLOCKTIME = 2:30:00
    OR SIMULATION CLOCKTIME = 3:30:00
    OR SIMULATION CLOCKTIME = 4:30:00
    OR SIMULATION CLOCKTIME = 5:30:00
    OR SIMULATION CLOCKTIME = 6:30:00
    OR SIMULATION CLOCKTIME = 7:30:00
    OR SIMULATION CLOCKTIME = 8:30:00
    OR SIMULATION CLOCKTIME = 9:30:00
    OR SIMULATION CLOCKTIME = 10:30:00
    OR SIMULATION CLOCKTIME = 11:30:00
    OR SIMULATION CLOCKTIME = 12:30:00
    OR SIMULATION CLOCKTIME = 13:30:00
    OR SIMULATION CLOCKTIME = 14:30:00
    OR SIMULATION CLOCKTIME = 15:30:00
    OR SIMULATION CLOCKTIME = 16:30:00
    OR SIMULATION CLOCKTIME = 17:30:00
    OR SIMULATION CLOCKTIME = 18:30:00
    OR SIMULATION CLOCKTIME = 19:30:00
    OR SIMULATION CLOCKTIME = 20:30:00
    OR SIMULATION CLOCKTIME = 21:30:00
    OR SIMULATION CLOCKTIME = 22:30:00
    OR SIMULATION CLOCKTIME = 23:30:00
    THEN ORIFICE R1 SETTING = 0.90
    AND ORIFICE R2 SETTING = 0.90
    AND ORIFICE R3 SETTING = 0.90
    AND ORIFICE R4 SETTING = 0.90
    AND ORIFICE R5 SETTING = 0.90
    AND ORIFICE R6 SETTING = 0.90
    AND ORIFICE R7 SETTING = 0.90

    RULE R1b
    ; hour setting
    IF SIMULATION CLOCKTIME = 0:00:00
    OR SIMULATION CLOCKTIME = 1:00:00
    OR SIMULATION CLOCKTIME = 2:00:00
    OR SIMULATION CLOCKTIME = 3:00:00
    OR SIMULATION CLOCKTIME = 4:00:00
    OR SIMULATION CLOCKTIME = 5:00:00
    OR SIMULATION CLOCKTIME = 6:00:00
    OR SIMULATION CLOCKTIME = 7:00:00
    OR SIMULATION CLOCKTIME = 8:00:00
    OR SIMULATION CLOCKTIME = 9:00:00
    OR SIMULATION CLOCKTIME = 10:00:00
    OR SIMULATION CLOCKTIME = 11:00:00
    OR SIMULATION CLOCKTIME = 12:00:00
    OR SIMULATION CLOCKTIME = 13:00:00
    OR SIMULATION CLOCKTIME = 14:00:00
    OR SIMULATION CLOCKTIME = 15:00:00
    OR SIMULATION CLOCKTIME = 16:00:00
    OR SIMULATION CLOCKTIME = 17:00:00
    OR SIMULATION CLOCKTIME = 18:00:00
    OR SIMULATION CLOCKTIME = 19:00:00
    OR SIMULATION CLOCKTIME = 20:00:00
    OR SIMULATION CLOCKTIME = 21:00:00
    OR SIMULATION CLOCKTIME = 22:00:00
    OR SIMULATION CLOCKTIME = 23:00:00
    THEN ORIFICE R1 SETTING = 0.5
    AND ORIFICE R2 SETTING = 0.5
    AND ORIFICE R3 SETTING = 0.5
    AND ORIFICE R4 SETTING = 0.5
    AND ORIFICE R5 SETTING = 0.5
    AND ORIFICE R6 SETTING = 0.5
    AND ORIFICE R7 SETTING = 0.5
  • Upaka June 23, 2011 at 10:34am

    Thanks a lot for the detailed reply.

    I will try to formulate the control rules based on these examples.

    I have to input 70 to 98 rules for all the orifices. (15 minute interval through out the simulation period)

     

    Is there any upper limit for the number of control rules in SWMM?

     

     

  • Robert Dickinson June 23, 2011 at 9:57am

    This is another more complicated rule that will work

     

    RULE R1a
    ; Half hour setting
    IF SIMULATION CLOCKTIME = 0:30:00
    OR SIMULATION CLOCKTIME = 1:30:00
    OR SIMULATION CLOCKTIME = 2:30:00
    OR SIMULATION CLOCKTIME = 3:30:00
    OR SIMULATION CLOCKTIME = 4:30:00
    OR SIMULATION CLOCKTIME = 5:30:00
    OR SIMULATION CLOCKTIME = 6:30:00
    OR SIMULATION CLOCKTIME = 7:30:00
    OR SIMULATION CLOCKTIME = 8:30:00
    OR SIMULATION CLOCKTIME = 9:30:00
    OR SIMULATION CLOCKTIME = 10:30:00
    OR SIMULATION CLOCKTIME = 11:30:00
    THEN ORIFICE R1 SETTING = 0.90

    RULE R1b
    ; Half hour setting
    IF SIMULATION CLOCKTIME = 0:00:00
    OR SIMULATION CLOCKTIME = 1:00:00
    OR SIMULATION CLOCKTIME = 2:00:00
    OR SIMULATION CLOCKTIME = 3:00:00
    OR SIMULATION CLOCKTIME = 4:00:00
    OR SIMULATION CLOCKTIME = 5:00:00
    OR SIMULATION CLOCKTIME = 6:00:00
    OR SIMULATION CLOCKTIME = 7:00:00
    OR SIMULATION CLOCKTIME = 8:00:00
    OR SIMULATION CLOCKTIME = 9:30:00
    OR SIMULATION CLOCKTIME = 10:00:00
    OR SIMULATION CLOCKTIME = 11:00:00
    THEN ORIFICE R1 SETTING = 0.5

     

    3293143898?profile=RESIZE_1024x1024

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