GHS Port Reference Center
Information for maritime designers, engineers and builders Maintained by Creative Systems, Inc., Creators of GHS Click here for information about GHS and other fine marine software. |
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`Progressive flooding simulation using the LOAD FLOW and CRTPT commands `Download the sample report: PROG.zip `Download BARGE.GF which is used in this run file: BARGE1.zip clear | clear all proj prog read barge.gf cont(*) "Flooding" 1.025 dr 4 vcg 5 so we lcg load (*) 0 cls macro fld `%1: time increment for flow in minutes di(*) status plan, body @50 @40 @30 /yesempty /fra load(*) flowc: %1 minutes so st we`:brief wait 0.25 / macro deltaHt refpt(hull) 40 5 2 refpt(t2.s, t3.s) 40 5 2 \{15}Checking the distance to the three relevant waterplanes \{15}to see if the full equilibrium has been reached. part hull \Crtpt2 is {height} above the external waterline. part t2.s \Crtpt2 is {height} above the internal waterline in {pname}. part t3.s \Crtpt2 is {height} above the internal waterline in {pname}. \{15}If not close enough, reduce the time step and flow again. / report di(*) status plan, body @50 @40 @30 /yesempty /fra /sync \{11}This run file demonstrates progressive flooding using LOAD FLOWC. \{11}Critical points are used to model openings which permit flow. \{11}Initial head pressures across each opening determine flow rates, \{11} which are constant for the specified time interval. crtpt "Hole in T3.S" 50 10 0 /tank:T3.s /open:0.4 crtpt "From T3.S to T2.S" 40 5 2 /tank:T2.s /open:0.4 /inside:T3.s st crtpt \\{11}Next we will allow flow for 25, 1-minute long, time steps. \{11}Note: The body view at Bulkhead2 shows the level in Tank 3. wait .fld(25) 1 \{11}Did you see Tank 3 fill up to CRTPT 2 before Tank 2 started to fill? .deltaHt wait .fld(5) .5 .deltaHt wait .fld(5) .25 .deltaHt \{11}The two tanks have filled to match the external waterplane. ME "The report which will open momentarily documents each time step. wait print preview report off |
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