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anuga-developer — Discussions about development of ANUGA
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From: Stephen R. <ste...@an...> - 2021-09-22 04:27:31
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Hi Rohini, Could you give us some more information about your setup. Ie Operating System Python version Anuga Version Whether Parallel or Sequential A copy of the output would be useful. Also a copy of your anuga script would be helpful. The time taken for each yield step can change markedly depending on the depth and speed of the flow. But excessively small inner timestep can be caused by small triangles in your domain (in which case it is sensible to look at the polygons defining your domain to remove any very small polygon segments. Also transmissive boundary conditions can sometimes generate unphysical inflow conditions which lead to a runaway situation. Cheers Steve ============================== Stephen Roberts Mathematical Sciences Institute Hanna Neumann Building #145 The Australian National University Canberra, ACT 2600 AUSTRALIA T: +61 2 61254445 | E: ste...@an... CRICOS Provider: 00120C ________________________________ From: Rohini Kale <kal...@gm...> Sent: Tuesday, 21 September 2021 11:08 PM To: anu...@li... <anu...@li...> Subject: [Anuga-developer] Regarding simulation stucks at certain time step or it takes more time Hello, We are using anuga for a large area. Sometimes the job is getting completed successfully and sometimes it stucks at timestep 0. also we have observed time consumption per time step increases drastically. Could you please tell us how to debug or figure out the exact issue and what all parameters need to check for the same? Please help us as soon as possible. |
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From: Rohini K. <kal...@gm...> - 2021-09-21 13:08:19
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Hello, We are using anuga for a large area. Sometimes the job is getting completed successfully and sometimes it stucks at timestep 0. also we have observed time consumption per time step increases drastically. Could you please tell us how to debug or figure out the exact issue and what all parameters need to check for the same? Please help us as soon as possible. |
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From: George G. <ggi...@gm...> - 2020-01-10 15:29:21
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Dear ANUGA users/developers, I am a rather new ANUGA user, so I apologize in advance in case I’m missing the obvious. I would like to implement water drainage in my ANUGA urban flood model. The input is a list of points representing the manhole locations and a corresponding desired volume flow rate removed from each manhole. To my understanding, the way to do it is through a rate operator with negative values. From what I see the operator rate is given in m/s, which means that when it is multiplied by some area would give the vol. flow rate removed from the domain. Given that the area of each manhole is in general smaller than the area of the cells I would like to use, but I would still like to remove a certain (exact) amount of water from each manhole, I was thinking of doing something along the following lines to impose the vol. flow rate V in every point/manhole i: 1. Identify the triangle id that contains point i (id_i) 2. Compute the area of the triangle Area_i=Area(id_i) 3. Apply the rate operator to this cell (Rate_i = V / Area_i) As a start, I looked into the get_triangle_containing_point function but it does not seem to be “parallel_safe". Could you please point me to the appropriate functions to implement the above algorithm, or suggest a better solution for this? Many thanks in advance, George |
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From: <Ole...@ga...> - 2008-04-21 05:27:16
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Hi Rajaraman
>Some time back Rudy was looking for adding buildings to the quantity
>"elevation".
>I would like to do similar thing to quantity "stage".
Yes - there is no difference in creating the quantity stage from any other
quantities.
>The problem I want to address is:
>I have initial surface displacement data for a small region given as
>xyz data in a file.
>Is it possible to add this information to the stage?
Yes it is. Currently, this is best done through the following little script I
made for Rudy (just replace elevation with stage and put your own data in):
domain.set_quantity('elevation', base_elevation) # The bare earth
Q_base = domain.get_quantity('elevation')
Q_delta = Quantity(domain)
Q_delta.set_values(your_polygon_function_with_buildings)
# Reset elevation to the sum of bare earth and buildings
domain.set_quantity('stage', Q_base + Q_delta)
But in the future we'll make set_quantity optionally additive (see
https://datamining.anu.edu.au/anuga/ticket/250)
>ps: some time back we were discussing about exploring anuga's
>worthiness far beyond 1UTM using mercator projection.
>I am now trying out a test case. In this regard only I would like to
>add data to stage.
Looking forward to hear how that pans out.
Cheers
Ole
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From: Matthew B. <mb...@uq...> - 2007-03-08 01:41:14
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Hi all, I would like to use the file boundary with a time resolution < 1 second. The time must be in the format hh:mm:ss. Is it possible to modify the file boundary time format so a fraction of a second will be accepted by ANUGA (i.e. time in the format hh:mm:ss.ss)? Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au |
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From: <Dun...@ga...> - 2007-03-02 00:41:11
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Hi, The problem was in the input file. The dates were increasing, when they should've been the same. Cheers Duncan -----Original Message----- From: anu...@li... [mailto:anu...@li...] On Behalf Of = Matthew Barnes Sent: Wednesday, 28 February 2007 10:40 AM To: anu...@li... Subject: [Anuga-developer] File_boundary problem Hi Ole, Duncan and others, I'm using ANUGA with a File_boundary. The time series file format is dd/mm/yy h%:m%:s%, h (depth) xmom ymom. The simulation runs without = error; however the file boundary does not follow the conditions described by = the h, xmom, ymom time series. The depth at the boundary continues to increase = even when the file describes a decreasing depth. I have performed a simple test where the depth is decreasing at all = times with xmom and ymom =3D 0 and I still encounter the same problem. Any suggetions? Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au =20 -------------------------------------------------------------------------= Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share = your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D= DEVDEV _______________________________________________ Anuga-developer mailing list Anu...@li... https://lists.sourceforge.net/lists/listinfo/anuga-developer |
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From: Matthew B. <mb...@uq...> - 2007-02-27 23:40:36
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Hi Ole, Duncan and others, I'm using ANUGA with a File_boundary. The time series file format is dd/mm/yy h%:m%:s%, h (depth) xmom ymom. The simulation runs without error; however the file boundary does not follow the conditions described by the h, xmom, ymom time series. The depth at the boundary continues to increase even when the file describes a decreasing depth. I have performed a simple test where the depth is decreasing at all times with xmom and ymom = 0 and I still encounter the same problem. Any suggetions? Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au |
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From: <Ole...@ga...> - 2007-01-31 23:06:01
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Hi Matt Thanks for your question. The model time is accessed through the methods Domain.get_time() and domain.set_time() I have updated the user manual http://datamining.anu.edu.au/~ole/anuga/user_manual/anuga_user_manual.pdf= With a FAQ addressing this question (page 78). Cheers Ole --------------------------------------------------------------------- Dr. Ole Nielsen | Computational Scientist =20 Geospatial and Earth Monitoring Division | E: Ole...@ga... Geoscience Australia | P: +61 2 6249 9048 Canberra, Australia | F: +61 2 6249 9986=20 --------------------------------------------------------------------- =20 -----Original Message----- From: Matthew Barnes [mailto:mb...@uq...]=20 Sent: Wednesday, 31 January 2007 11:00 To: anu...@li... Cc: Nielsen Ole Subject: FW: Accessing model time Hi All, I would like to access the model time for use in an "if" statement. What = is the correct command to access the model time? Any advice is appreciated. Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au =20 |
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From: Matthew B. <mb...@uq...> - 2007-01-31 06:26:42
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Thanks Duncan, I'm attempting to change the boundary condition after a defined time. Your advice has helped the cause! Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au -----Original Message----- From: Dun...@ga... [mailto:Dun...@ga...] Sent: Wednesday, 31 January 2007 3:37 PM To: mb...@uq... Cc: anu...@li... Subject: RE: [Anuga-developer] Accessing model time Hi Matt, At the end of the run*.py file there is probably something like; for t in domain.evolve(yieldstep = yieldstep, finaltime = finaltime): The t is the model time. So below is an example of using an 'if' statement, based on the model time; for t in domain.evolve(yieldstep = yieldstep, finaltime = finaltime): if t > 0.5: print "yeah" Cheers Duncan -----Original Message----- From: anu...@li... [mailto:anu...@li...] On Behalf Of Matthew Barnes Sent: Wednesday, 31 January 2007 10:11 AM To: anu...@li... Subject: [Anuga-developer] Accessing model time Hi All, I would like to access the model time for use in an "if" statement. What is the correct command to access the model time? Any advice is appreciated. Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Anuga-developer mailing list Anu...@li... https://lists.sourceforge.net/lists/listinfo/anuga-developer |
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From: <Dun...@ga...> - 2007-01-31 05:36:45
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Hi Matt,
At the end of the run*.py file there is probably something like;
for t in domain.evolve(yieldstep =3D yieldstep, finaltime =3D =
finaltime):
The t is the model time.
So below is an example of using an 'if' statement, based on the model =
time;
for t in domain.evolve(yieldstep =3D yieldstep, finaltime =3D =
finaltime):
if t > 0.5:
print "yeah"=20
Cheers
Duncan
-----Original Message-----
From: anu...@li...
[mailto:anu...@li...] On Behalf Of =
Matthew
Barnes
Sent: Wednesday, 31 January 2007 10:11 AM
To: anu...@li...
Subject: [Anuga-developer] Accessing model time
Hi All,
I would like to access the model time for use in an "if" statement. What =
is
the correct command to access the model time? Any advice is appreciated.
Cheers,
Matt.
Matthew Barnes
Coastal Engineering Research Centre
Dept Civil Engineering
University of Queensland, Brisbane
QLD 4072 AUSTRALIA
Tel: +61 (0)7 3365 4170
Fax: +61 (0)7 3365 4599
Email: mb...@uq...
Web: www.uq.edu.au/coastal; www.crctourism.com.au
=20
-------------------------------------------------------------------------=
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share =
your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D=
DEVDEV
_______________________________________________
Anuga-developer mailing list
Anu...@li...
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From: Matthew B. <mb...@uq...> - 2007-01-30 23:59:46
|
Hi All, I would like to access the model time for use in an "if" statement. What is the correct command to access the model time? Any advice is appreciated. Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au |
|
From: Matthew B. <mb...@uq...> - 2007-01-30 23:11:14
|
Hi All, I would like to access the model time for use in an "if" statement. What is the correct command to access the model time? Any advice is appreciated. Cheers, Matt. Matthew Barnes Coastal Engineering Research Centre Dept Civil Engineering University of Queensland, Brisbane QLD 4072 AUSTRALIA Tel: +61 (0)7 3365 4170 Fax: +61 (0)7 3365 4599 Email: mb...@uq... Web: www.uq.edu.au/coastal; www.crctourism.com.au |
