Bongirs, Sorry, I got a bit off piste. The price you want is best obtained from a software supplier. Get to know them and get budget prices. Then ask for the basic 30 day licence to be extended to give more time for review. Suppliers are desparate to get market share. They are not going to...
I was just being tongue in cheek. I just get a bit cynical about the way folk talk about the big names as though these were the only things that could produce decent results - certainly at the level that covers +80% of the market. I have tried to reverse engineer calcs in the past - basic...
I'll just rock the boat a bit in the spirit of balance! I would agree with the general points about Autodesk Simulation. However, I would not write off Autodesk just yet. I purchased Algor at the height of the crash at the end of 08. It was as much as a toy as anything and because I could...
The file opens fine in 15. I suspect it needs a bit of tidying up to get all the overlapping regions in calculation order. Also origin needs setting to 1. The use of k and h in the Chord.trans and Chord.long is not correct.
No - but IMHO this is very good question.
Probably yes - especially for systems that are are not sufficiently controlled. However, it normally goes in the too difficult file.
How did you calculate 126 bar g? The fire chamber only has 3 ribs. At 20 mm thick and 1254 dia, I suspect it would be very easy to over heat the 12 o'clock position. Highest heat input and poorest surface heat transfert coefficient on the water side. Scale and debris collecting at this point...
As does everybody I have met. One assumes that the person at PTC who promised to translate Mathcad from c is now a very skilled burger flipper. It must have cost millions in lost sales.
Femdesigner has been around for at least 10 years. I had a look at that time but I found the modelling to be hard work. However with current cad solid modellers this problem should no longer exist. Get a demo and give it a try. Try all in your price range. Eg Roshaz
ChiraL,
You probably only have a linear licence file. You had to pay more to include non-linear. It was only in the last couple of years since Autodesk took over that the linear option was no longer sold separately. It was a great free upgrade if you previously only had the linear version...
I am with metengr. There are serious questions on the design. The stress and stress concentration at the back of the fillet welds could be anybodies guess. The only reason a normal repad is permitted is because it has stood the test of time with reasonable (but not total) success. A proper...
I would agree. However, Draftsight is a different tool with some overlap and it is free. I cannot comment on current AutoCAD. It seems a good comparison to AutoCAD 2004. I have not found any free parametric modellers that come close. All are better at 3d but few can produce proper...
Pat Couture is spot on. Draftsight is pretty good at 3D. I don't know why it is only pushed as 2D - seems odd to keep quiet about such great features. I never did understand marketing.
I can only give a part opinion on this.
a) Support
This was a concern when Autodesk took over at the end of 08. However, to date this concern has proved groundless - at least for me. Quite a few of the old support names are still involved. I have had replies within a couple of hours after...
All are good replies and definitely should be considered in depth - especially knowledge of the codes. However, never think you are any worse than anybody else. From your background I would suspect that you will not have difficulty in identifying less than ideal calcs even in the most expert...
Shhhhh, You are exposing a trade secret - that nozzle loads disappear as soon as they reach the shell. Nozzle loads never reach the vessel supports as you suggest. It is probably specified in a little known reference book - Vessel and Pipework Design by Harry Potter.
Hi James,
The quality looks quite good. I have never seem any better. It matches the approximate accuracy of the output. I don't believe that there is anything particular about the nomograph. It will probably be based on the guided cantilever formula. It might be simpler to create a...
I would suspect blasting a slug of liquid down the flare system might be a killer factor. Slug flow events have severely damaged more than than one flare system.
I would guess that the bottom line is that if a dynamic response is important then the system should not use non-linear supports - if only to be able to produce valid calculations. If the calculation implies that pipe will bouncing on the supports, then you need to fit hold-downs or snubbers...
If you are using something like Caesar then you tell it which load case to use for the modal analysis. If a support is in contact in this load case, it is converted to a bi-directional, no gap linear support. If it is not in contact, the support takes no further part in the analysis.
Exactly! Are we implying that the nominal superheater relief capacity of 15-25% might need a little more detailed consideration than is currently interpreted by some code users.
