FLtT. british .Slug=lbf.s2/ft Gravitational system force(lbf); length(ft) time(second); temperat ure(degree Rankine)
• FLtT, British Gravitational system: • force(1bf); length(ft); • time(second);temperat ure(degree Rankine) • 1 slug = 1lbf.s2 /ft
FMLtT (English 32.2 ft Ibm/(lbf. S2) Engineering system) force(l bf) mass(Ibm) length(foot) time (second) temperature ( degree Rankine)
• FMLtT (English Engineering system) • force(1bf) mass(lbm) length(foot) time (second) temperature (degree Rankine) • gc=32.2 ft.lbm/(lbf. S2 )
4. State the three basic system of dimension 5. The typical units of physical quantities in the Sl, British Gravitational, and English Engineering system of units FLtT: lbf Mass: slug= lbf. s2/ft FMLtT: gc=322 ftIbm/(Ibf. S2) SI: IN=lkg. m/s2
4. State the three basic system of dimension 5. The typical units of physical quantities in the SI, British Gravitational, and English Engineering system of units SI: 1N=1kg. m/s2 FLtT: 1bf Mass: 1slug = 1lbf.s2 /ft FMLtT: gc=32.2 ft.lbm/(lbf. S2 )
Chapter 2 Fundamental Concept Mechanics and thermodynamics
Chapter 2 Fundamental Concept Mechanics and thermodynamics
2-1 Fluid as a continuum The average or macroscopic effects of many molecules continuum(classic fluid mechanics)(p, p,T,V is continuous function of position and time the mean free path of the molecules is same order of magnitude as the smallest significant characteristic dimension of the problem(rarefied gas flow)
2-1 Fluid as a continuum • The average or macroscopic effects of many molecules……….continuum(classic fluid mechanics)(p, ,T,V is continuous function of position and time) • the mean free path of the molecules is same order of magnitude as the smallest significant characteristic dimension of the problem(rarefied gas flow)