Physics & Mathematics: Recent submissions

Now showing items 1-20 of 63

    • Effect of Beam Length and Braced Length on Moment-Rotation Behavior of Castellated Beams 

      Gerami, Mohsen; Saberi, Hamid; Saberi, Vahid; Firouzi, Ashkan (Scientific Research, 2013-09)
      The presence of web openings in castellated beams introduces different modes of failure at the perforated sections such as excessive stresses in tee-sections, excessive stresses in mid-depth of the web post, web-post ...

    • Study on the Relationship between Aspects, Orientation,Type, and Unit Position toward to Indoor Air Quality in Flat 

      Tobing, Rumiati R.; Karyono, Tri Harso; Sabaruddin, Arief (Scientific Research, 2013-05)
      Thermal factor is one of the main factors of the green building concept. The purpose of this research is to test building performance through design aspect that influences thermal comfort, the design aspects include: ...

    • Some New Results on Prime Graphs 

      Vaidya, Samir K.; Prajapati, Udayan M. (Scientific Research, 2012-07)
      We investigate prime labeling for some graphs resulted by identifying any two vertices of some graphs. We also introduce the concept of strongly prime graph and prove that the graphs Cn, Pn, and K1,n are strongly prime ...

    • Decisive Parameters for Backwater Effects Caused by Floating Debris Jams 

      Hartlieb, Arnd (Scientific Research, 2015-12)
      The dimensional analysis of the backwater effect caused by debris jams results in the Froude number of the approach flow in the initial situation prior to debris jam formation and the debris density as decisive parameters. ...

    • Combined Effect of Magnetic Field and Compressibility on Rayleigh Taylor Instability 

      Mitra, Aniruddha; Mandal, Labakanta; Roychoudhury, Rajkumar; Khan, Manoranjan (Scientific Research, 2015-12)
      The nonlinear analysis of the combined effect of magnetic field and compressibility on the growth rate of Rayleigh-Taylor (RT) instability has been investigated for inviscid two fluid interface. We have considered an ...

    • Effect of Curvature of Tip and Convexity of Electrode on Localization of Particles 

      Ghonge, Sudarshan; Prasad, D. Nagendra; Narayan, Swarnim; Francis, Hains; Sethi, Astha; Deb, Subimal; Banerjee, Souri (Scientific Research, 2015-12)
      We investigate the effect of curvature of the tip and the convexity of an electrode on the localization of suspended particles under the combined effect of dielectrophoresis and AC electroosmosis through simulations using ...

    • Experimental and Numerical Investigations on Plate-Type Heat Exchanger Performance 

      Ikegami, Yasuyuki; Mutair, Sami; Kawabata, Yusuke (Scientific Research, 2015-03)
      Low-grade Thermal Energy Conversion (LTEC) is a potential source of renewable energy. One of its forms is the Ocean Thermal Energy Conversion (OTEC) in which the temperature difference between the warm surface water and ...

    • Weis-Fogh Mechanism Mathematic Model of Wave Power Generation Device 

      Chen, Xin; Kuang, Quan; Li, Yang; Wang, Songbo; Ye, Yunling; Zhang, Shesheng (Scientific Research, 2014-12)
      A Weis-Fogh mechanism wave power generation system is designed, its physical model and mathematical model are discussed, and the component expressions of fluid dynamic expression are derived. Adopting numerical integral ...

    • Impact of the Housing on the Air Flow and the Thermal Behavior of an Automotive Clutch System 

      Levillain, Anthony; Brassart, Pascale; Patte-Rouland, Béatrice (Scientific Research, 2015-03)
      New directives and increasing competition push automakers to get better performances (engine power increase), along with mass and size reduction (consumption). These evolutions lead to an increase of the thermal solicitations ...

    • Novel Power Law of Turbulent Spectrum 

      Osonphasop, Chusak; Nakagawa, Takeo R. M. (Scientific Research, 2014-06)
      This paper is concerned with novel power law of turbulent energy spectrum and the relevant experiment in tidal current. The power law in the inertial sub-range has been proposed in such a way that the power of the ...

    • Simulation of Average Turbulent Pipe Flow: A Three-Equation Model 

      Alammar, Khalid (Scientific Research, 2014-03)
      The aim of this study is to evaluate a three-equation turbulence model applied to pipe flow. Uncertainty is approximated by comparing with published direct numerical simulation results for fully-developed average pipe flow. ...

    • The Research of Performance Comparison of Displacement and Mixing Ventilation System in Catering Kitchen 

      Yuan, Jianping; Wang, Longyan; Liu, Xiaofan (Scientific Research, 2013-07)
      A commercial kitchen is a complicated environment where multiple components of a ventilation system including hood exhaust, conditioned air supply, and makeup air systems work together but not always in unison. And the ...

    • Effect of Hub-Ratio on Performance of Asymmetric Dual-Rotor Small Axial Fan 

      Wu, Yongmin; Jin, Yingzi; Jin, Yuzen; Wang, Yanping; Zhang, Li (Scientific Research, 2013-07)
      Currently, domestic and abroad scholars put more attention on contra-rotating dual-rotor axial fan. But there is less scholars study on asymmetric dual-rotor small axial fan, which is one of the contra-rotating dual-rotor ...

    • Performances and Rotating Flows of Rotary Jet Pump 

      Komaki, Keiichi; Kanemoto, Toshiaki; Sagara, Kenji (Scientific Research, 2012-11)
      The rotary jet pumps, namely the pitot pumps, are composed of the rotating casing with the impeller channels and the stationary pick-up tube for discharging, are known as the one of high pressure pumps in the U.S. market. ...

    • Analysis on Physical Mechanism of Sound Generation inside Cavities Based on Acoustic Analogy Method 

      Yang, Dangguo; Li, Jianqiang; Liu, Jun; Zhang, Yi; Li, Yaohua (Scientific Research, 2013-03)
      Analysis of coupling aerodynamics and acoustics are performed to investigate the self-sustained oscillation and aerodynamic noise in two-dimensional flow past a cavity with length to depth ratio of 2 at subsonic speeds. ...

    • A New Surfactant Flooding Model for Low Permeability Reservoirs 

      Li, Yongwei; Yin, Lizhong (Scientific Research, 2013-03)
      Surfactant as a successful Enhanced Oil Recovery (EOR) agent has been widely used in many mature reservoirs. This research focuses on the description of surfactant solution at low permeability condition. A new three-dimensional, ...

    • Effects of Orbital Motion on the Boundary Layer Flow on a Spinning Disk 

      Munekata, Mizue; Jobi, Naoya; Ikebe, Koichi; Yoshikawa, Hiroyuki (Scientific Research, 2012-12)
      The objective of this study is to experimentally examine the effects of orbital motion on the boundary layer flow on a spinning disk. The boundary layer flow on the disk is visualized by the oil flow method, and velocity ...

    • A Computational Study of the Gas-Solid Suspension Flow through a Supersonic Nozzle 

      Sun, Jian G.; Kim, Heuy D.; Park, Jin O.; Jin, Ying Z. (Scientific Research, 2012-12)
      The present study focuses on numerical simulation of the gas-solid suspension flow in a supersonic nozzle. The Euler- Lagrange approach using a Discrete Phase Model (DPM) has been used to solve the compressible Navier-Stokes ...

    • Comparative Analysis of Velocity Decomposition Methods for Internal Combustion Engines 

      Ölçmen, Semih; Ashford, Marcus; Schinestsky, Philip; Drabo, Mebougna (Scientific Research, 2012-09)
      Different signal processing technique performances are compared to each other with regard to separating the mean and fluctuating velocity components of a simulated one-dimensional unsteady velocity signal comparable to ...

    • Modeling Evaporating Droplets in Complex Unsteady Flows 

      Ghosal, Sandip; Apte, Sourabh V. (Scientific Research, 2012-06)
      In many applications, a moving fluid carries a suspension of droplets of a second phase which may change in size due to evaporation or condensation. Examples include liquid fuel drops in engines and raindrops or ice-crystals ...