what is the best Simulation software/tool?

Simulation software is available for many types of engineering.

ASPEN and HYSIM are good for chemical processes.

FEA (Finite Elemental Analysis) is used to simulate effects on objects by breaking down the problem into small simple blocks.

Catia and Unigraphics are programs that are used to model 3D parts and objects which can be used to create assemblies and evaluate them with additional add-on software.

I'm sure thats only a small sample of what's available.. truth is, there are many simulations and with advancements today, it is very difficult to find any one simulation that is general enough to cover all applications.

What are you trying to simulate? Electronics workbench works good for simulating electrical circuits. Alterra Max Plus + II works good for simulating digital logic design.

i bought this vibrating blow up doll with 3 holes for something like 50 bucks from the back of a catalog. this was in college. we dressed it up with some ladies clothes whenever we had a party, and sat the doll on a couch on the far end of the room. without fail, someone at the end of the night would make some comment about the cute girl over there sitting by herself.

Ants breathe, yet unlike us. Like many styles of animals they have no lungs. rather they have tracheae, that have small around openings (no longer purely on the tummy) that bring about a gadget of branching tubes that stretch to all cells of the physique. gasoline replace happens contained throughout the time of the skinny partitions of those tubes. In large bugs growth and contraction of the tummy is usually used to pump air out and in of the tracheae. straight forward diffusion isn't quickly sufficient to grant the desires of a large animal, regardless of the indisputable fact that contained in terms of maximum invertebrates their choose for oxygen isn't as large as in a vertebrate animal. it is because of the fact they are (in general) smaller and characteristic a decrease metabolic value.