It is interesting to note that the convective boundary condition is applicable for rigid-free and rigid-rigid boundary conditions.
The critical wavenumber shown in Figure 3b (mc = 2.670) is smaller than the corresponding critical wavenumber for the rigid-rigid boundaries shown in Figure 1b.
For Rb = 0 the critical wavenumber is smaller for the rigid-free boundaries but for Rb = 120000 it is larger than for the rigid-rigid boundaries.
The results for the rigid-rigid and rigid-free boundaries are similar, but the critical Rayleigh number for the rigid-free boundaries is smaller.
As in the case with rigid-rigid boundaries, the presence of microorganisms produces a destabilizing effect and reduces the critical value of the Rayleigh number (compare Figures 4a and 3a). Figure 4 Similar to Figure 3, but now with Rb = 120000.
For the case of the rigid-rigid boundaries, the trial functions, which satisfy the boundary conditions given by Equations 48 and 49, are W 1 = z 2 ( 1 − z ) 2, Θ 1 = z ( 1 − z ), Φ 1 = z ( 1 − z ), N 1 = 1 + α ( z − 1 2 z 2 ), Ξ ¯ 1 = z − 1 2 z 2 (51).
These chimeras allow us to assess the competition involving opposing motors with similar lever arm rigidity, specifically 1V/VI 1VI; flexible vs flexible) and 1VI/V:1V; rigid vs rigid).
"One thing we've seen in the last few years is that rigid rules and rigid allocations don't add value," she said.
Some were blimps, their shape maintained entirely by the pressure of the lifting gas within; others had rigid or semi-rigid hulls.
"Starting today," Mayor Michael R. Bloomberg said at a news conference in City Hall Park, "if it's a rigid plastic -– any rigid plastic -– recycle it".
The early history of non-rigid, semi-rigid, and rigid airships is first introduced.
