Recent content by Ktracid

Thank you both. I have found your responses very useful. I have been asking for padding (injecting inert gas in the vacant space of tanker) and I understand that it has other advantages. We all know that the fluid (i.e. diluent) is flammable (its flash point or vapor pressure is not know yet)...

Hi all, I have been working on tanker truck off-loading that handles diluent (flammable fluid). I have the following questions: 1. How do I make sure that the venting capabilities of the tanker (that we are off-loading from) are adequate? In other words, how can I determine the maximum...

I am in agreement too. I think.

LittleInch, I also believe there should not be any problem. In my opinion, the pressure increase due to seismic loads should be negligible but I just do not know how to justify this statement. I calculated the additional pressure due to seismic acceleration using the rho X acceleration X height...

Thanks BigInch; I fully agree with you on the tanker truck example. Let's forget about sloshing and the fact that the liquid level at the tank could be tilted. How about if we are dealing with a pressurized pipe? I think it still applies; what do you think? Let me explain further. We have a...

We simplify it and treat milk of lime as any other slurry. There are some curves that indicate the variations of slurry viscosity with respect to the volumetric solid percentage and size of solid particles. If you let me know your conditions, I can try to get you an estimate. Unfortunately, the...

I have a question that may lead to interesting discussions. Can seismic acceleration lead to transient pressure fluctuations in a pressurized pipe? Any hint or insight could be useful. Thanks.

Can anybody please explain 1. The pros and cons of using ASME vs. API for plate heat exchangers. 2. Which one shall be preferred for cooling water applications.

Hi all 1. Is formation of vortices (and air being sucked into) a general concern for positive displacement (PD) pumps? 2. If yes, how can the minimum submergence level be calculated? Can the equation available in HI 9.8-1998 Par.9.8.7.3 be used?? Thanks.

The top of these tanks are open so there is not going to be any vacuum issues.

It is for emptying the tanks fully. Can you explain your answer more?

I am working on sizing the drain pipe of several tanks / pump boxes (for slurry applications). Depending on the size of this pipe, the drainage time of these tanks varies between a few minutes to a few hours. I wonder if there is a recommended range for the drainage time for such applications...

I found something already and it is very useful: http://eng.lacity.org/techdocs/sewer-ma/haj.pdf

I should have been clearer. I was talking about the hydraulic analysis of junctions and reference to a document or something in order to familiarize myself with its theory. Pirooz

Hi all, I have a problem where two open channel flows are merging into one. I have all the required information of the two inlet channels (i.e. dimension, flow depth, velocity, etc.) and am interested in obtaining the head and velocity of the outlet channel. Does anybody have any tips for a...