A novel warp for natural image stitching is proposed that utilizes the property of cylindrical warp and a horizontal pixel selection strategy. The proposed ratio-preserving halfcylindrical warp is a combination of homography and cylindrical warps which guarantees alignment by homography and possesses less projective distortion by cylindrical warp. Unlike previous approaches applying cylindrical...

Cylindrical shells, unstiffened or stiffened with rings and/or stringers are commonly used in offshore structures as main loading-carrying members. Comprehensive theoretical work and experimental studies on the buckling behavior of cylindrical shells have been carried out in the past. The increasing offshore application of stiffened cylindrical shells has raised some new challenges that need to...

a new three-dimensional unit cell model has been developed for modeling three constituent phases including inclusion, interphase and matrix. the total elastic modulus of nano-composite is evaluated.  numerical results are in good agreement with the previous proposed theoretical modeling. higher matrix and inclusion elastic modulus both can dramatically influence the total elastic modulus.

the produced electric and magnetic fields due to lightning strikes to mountainous ground are determined in this paper. for the sake of simplicity a cone-shaped ground with finite conductivity is assumed to represent a natural nonflat ground. by this assumption, we deal with an axillary symmetrical structure so we use the cylindrical 2d-fdtd to save the simulation memory and time, dramatically. ...

This experimental work addressed the thermal control a roof-top collective building antenna meant to home equipment in smart buildings. The was placed inside concentric quasi-cylindrical cavity maintained at low temperature. Cooling provided by Water-Copper nanofluid saturated porous matrix between and enclosure. ratio of conductivity material that water varied from 4 up 41.2. nanoparticles vol...

The objective of the present numerical study is to investigate heat transfer enhancement, entropy generation, and thermal performance turbulent nanofluids inside double-pipe exchangers equipped with novel perforated cylindrical turbulators. Effects inflow velocity, CuO nanoparticles volume fraction index are evaluated on Nusselt number, friction loss, factor (?), viscous irreversibilities excha...

Flows of nanofluids with rod-like nanoparticles in a microscale channel having cylindrical micro pin heat sinks were numerically simulated to analyze the effect aspect ratio particles on transfer and flow channel. Furthermore, optimal was investigated by examining trade-off relationship between pressure drop thermal efficiency. The Hamilton-Crosser model Brenner’s used describe conductivity vis...

This experimental study investigates the advantage of using Mn–Zn Fe2O4/water ferrofluid subjected to effect a non-uniform magnetic field on thermal efficiency fabricated cylindrical solar collector with receiver in shape helical pipe. Using ASHRAE Standard, this has investigated influence nanoparticles volume fraction (0.0–1.0%), mass flow rate fluid (0.00415–0.033 kg/s), and produced by set p...

in the present work, study of the vibration of a functionally graded (fg) cylindrical shell made up of stainless steel, zirconia, and nickel is presented. free vibration analysis is presented for fg cylindrical shells with simply supported-simply supported and clamped–clamped boundary condition based on temperature independent material properties. the equations of motion are derived by hamilton...