Hi Carlo, all realsoft friends...

1) little question for my unsatisfied knowledge:-) What are "fluids" or 
"dynamic simulations"? Geometric objects, waves (what are waves?), metaball 
objects..., particles, gases... -  I don't know... how can I build "fluids" for 
a vineglas eg???  

best regards and good luck for your plugins, don't give up:-D 
Ciao , Frankolino 

2) I have found this: 

"From Wikipedia, the free encyclopedia 
Jump to: navigation, search 
Continuum Mechanics 
Conservation of mass 
Conservation of momentum 
Navier-Stokes equations 
[show]Classical mechanics 
Stress · Strain · Tensor 
[show]Solid mechanics 
Solids · Elasticity 

Plasticity · Hooke's law 
Rheology · Viscoelasticity 
[show]Fluid mechanics 
Fluids · Fluid statics 
Fluid dynamics · Viscosity · Newtonian fluids 
Non-Newtonian fluids 
Surface tension 
[show]Scientists 
Newton · Stokes · Navier · Cauchy· Hooke · others 
This box: view • talk • edit 

3) Typical aerodynamic teardrop shape, showing the pressure distribution as the 
thickness of the black line and showing the velocity in the boundary layer as 
the violet triangles. The green vortex generators prompt the transition to 
turbulent flow and prevent back-flow also called flow separation from the high 
pressure region in the back. The surface in front is as smooth as possible or 
even employ shark like skin, as any turbulence here will reduce the energy of 
the airflow. The Kammback also prevents back flow from the high pressure region 
in the back across the spoilers to the convergent part. Putting stuff inside 
out results in tubes, they also face the problem of flow separation in their 
divergent parts, so called diffusers. Cutting the shape into halfs results in 
an aerofoil with the low pressure region on top leading to lift (force). 

Typical aerodynamic teardrop shape, showing the pressure distribution as the 
thickness of the black line and showing the velocity in the boundary layer as 
the violet triangles. The green vortex generators prompt the transition to 
turbulent flow and prevent back-flow also called flow separation from the high 
pressure region in the back. The surface in front is as smooth as possible or 
even employ shark like skin, as any turbulence here will reduce the energy of 
the airflow. The Kammback also prevents back flow from the high pressure region 
in the back across the spoilers to the convergent part. Putting stuff inside 
out results in tubes, they also face the problem of flow separation in their 
divergent parts, so called diffusers. Cutting the shape into halfs results in 
an aerofoil with the low pressure region on top leading to lift (force). 

Fluid dynamics is the sub-discipline of fluid mechanics dealing with fluids 
(liquids and gases) in motion. It has several subdisciplines itself, including 
aerodynamics (the study of gases in motion) and hydrodynamics (the study of 
liquids in motion). Fluid dynamics has a wide range of applications, including 
calculating forces and moments on aircraft, determining the mass flow rate of 
petroleum through pipelines, predicting weather patterns, understanding nebulae 
in interstellar space and reportedly modeling fission weapon detonation. Some 
of its principles are even used in traffic engineering, where traffic is 
treated as a continuous fluid. 

Fluid dynamics offers a systematic structure that underlies these practical 
disciplines and that embraces empirical and semi-empirical laws, derived from 
flow measurement, used to solve practical problems. The solution of a fluid 
dynamics problem typically involves calculation of various properties of the 
fluid, such as velocity, pressure, density, and temperature, as functions of 
space and time." 

4) O.k., but how can I understand this one for Realsoft 3D?  

best regards, Frank the secondo timo:-)
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