Browsing Department of Mechanical Engineering by Title

Now showing items 98-117 of 137

    • Regulation of Adenine Nucleotide Concentration at Endothelium-Fluid Interface by Viscous Shear Flow 

      Shen, Jian; Gimbrone, Michael A. Jr.; Luscinskas, Francis W.; Dewey, C. Forbes Jr. (Biophysical Society, 1993)
      The action of adenine nucleotides on vascular endothelial cells is apparently mediated by the local flow conditions. Because nucleotides are sequentially degraded from ATP - ADP - AMP -- adenosine by ecto-enzymes at the ...

    • Review of Experimental Work in Biomimetic Foils 

      Triantafyllou, Michael S.; Techet, Alexandra H.; Hover, Franz S. (Institute of Electrical and Electronic Engineers, 2004-07)
      Significant progress has been made in understanding some of the basic mechanisms of force production and flow manipulation in oscillating foils for underwater use. Biomimetic observations, however, show that there is a ...

    • Robust Control For Underwater Vehicle Systems With Time Delays 

      Triantafyllou, Michael S .; Grosenbaugh, Mark A. (Institute of Electrical and Electronic Engineers, 1991)
      Presented in this paper is a robust control scheme for controlling systems with time delays. The scheme is based on the Smith controller and the LQG/LTR (Linear Quadratic Gaussian/Loop Transfer Recovery) methodology. ...

    • The role of surface conditions in nucleate boiling 

      Griffith, P.; Wallis, John D. (Cambridge, Mass. : Massachusetts Institute of Technology, Division of Industrial Cooperation, [1958], 1958)
      Nucleation from a single cavity has been stuied indicating that cavity gemtry is aportant in two ways. The mouth diameter determines the superheat nmeded to initiate boiling and its shape determines its stability one boiling ...

    • Sequential Loop Closure Based Adaptive Autopilot Design for a Hypersonic Vehicle 

      Wiese, Daniel P.; Annaswamy, Anuradha M.; Muse, Jonathan A.; Bolender, Michael A.; Lavretsky, Eugene (2016-03-09)
      This paper presents a sequential loop closure approach to designing a velocity and altitude tracking au- topilot for a hypersonic vehicle. The control architecture consists of two decoupled control subsystems, one for ...

    • Simultaneous Measurements of Actin Filament Turnover, Filament Fraction, and Monomer Diffusion in Endothelial Cells 

      McGrath, J. L.; Tardy, Y.; Dewey, C. F. Jr; Meister, J. J.; Hartwig, J. H. (Biophysical Society, 1998-09)
      The analogous techniques of photoactivation of fluorescence (PAF) and fluorescence recovery after photobleaching (FRAP) have been applied previously to the study of actin dynamics in living cells. Traditionally, ...

    • Slug flow 

      Griffith, P.; Wallis, Graham B. (Cambridge, Mass. : Division of Sponsored Research, Massachusetts Institute of Technology, [1959], 1959)
      Introduction: When two phases flow concurrently in a pipe, they can distribute themselves in a number of different configurations. The gas could be uniformly dispersed throughout the liquid in the form of small bubbles. ...

    • Some hydrodynamic characteristics of bubbly mixtures flowing vertically upward in tubes 

      Rose, Sewell C.; Griffith, P. (Cambridge, Mass. : M.I.T. Division of Sponsored Research, [1964], 1964)
      An investigation of bubbly flow has been conducted in vertical plexiglass tubes using air and water at atmospheric pressure. The bubbly flow pattern is an entrance condition or a non-fully developed flow. A spontaneous ...

    • Squaring-Up Method for Relative Degree Two Plants 

      Qu, Zheng; Annaswamy, Anuradha; Lavretsky, Eugene (2015-09-28)
      Abstract--- Non-square multi-input-multi-output (MIMO) plants are becoming increasingly common, as the addition of multiple sensors is becoming prevalent. However, square systems are needed sometimes as an leverage when ...

    • A study of boiling water flow regimes at low pressures 

      Fiori, Mario P.; Bergles A. E. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1966], 1966)
      "A comprehensive experimental program to examine flow regimes at pressures below 100 psia for boiling of water in tubes was carried out. An electrical probe, which measures the resistance of the fluid between the centerline ...

    • A study of system-induced instabilities in forced-convection flows with subcooled boiling 

      Maulbetsch, John S.; Griffith, P. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
      A combined analytical and experimental program was carried out to investigate the problem of hydrodynamic stability of forcedconvection flows with boiling. The study was restricted to the flow of water in small channels ...

    • Subcooled flow boiling of fluorocarbons 

      Murphy, Richard Walter; Bergles A. E. (Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1971], 1971)
      A study was conducted of heat transfer and hydrodynamic behavior for subcooled flow boiling of Freon-113, one of a group of fluorocarbons suitable for use in cooling of high-power-density electronic components. Problems ...

    • Supplementary Materials to "Adaptive Output-Feedback Control for A Class of Multi-Input-Multi-Output Plants with Applications to Very Flexible Aircraft" 

      Qu, Zheng; Annaswamy, Anuradha; Lavretsky, Eugene (2016-03-22)
      A dominant presence of parametric model uncertainties motivates an adaptive approach for control of very flexible aircraft (VFA). This paper proposes an adaptive controller that includes a baseline design based on observers ...

    • Supplementary Materials to "Adaptive Output-Feedback Control for Relative Degree Two Systems Based on Closed-Loop Reference Models" 

      Qu, Zheng (2015-09-14)
      Abstract--- In this paper, a new adaptive output-feedback controller for multi-input-multi-output (MIMO) linear plant models with relative degree two is developed. The adaptive controller includes a baseline design based ...

    • Survey and Applications of the 1D Finite Element Method 

      Renteria, Fidel Cano (2021-01-20)

    • Survey and evaluation of techniques to augment convective heat transfer 

      Bergles A. E.; Morton, Harmon Lindsay. (Cambridge, Mass. : M.I.T. Dept. of Mechanical Engineering, [1965], 1965)
      This report presents a survey and evaluation of the numerous techniques which have been shown to augment convective heat transfer. These techniques are: surface promoters, including roughness and treatment; displaced ...

    • A Systems and Control Perspective of CPS Security 

      Dibaji, Seyed Mehran; Pirani, Mohammad; Flamholz, David Bezalel; Annaswamy, Anuradha M.; Johansson, Karl Henrik; e.a. (2019-01-22)
      Abstract—The comprehensive integration of instrumentation, communication, and control into physical systems has led to the study of Cyber-Physical Systems (CPS), a field that has recently garnered increased attention. ...

    • Tables for solution of the heat-conduction equation with a time-dependent heating rate 

      Bergles A. E. (Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, [1962], 1962)
      Tables are presented for the solution of the transient onedimensional heat flow in a solid body of constant material properties with the heating rate at one boundary dependent on time. These tables allow convenient and ...

    • Theoretical Estimates of Mechanical Properties of the Endothelial Cell Cytoskeleton 

      Satcher, Robert L. Jr.; Dewey, C. Forbes Jr. (Biophysical Society, 1996)
      Current modeling of endothelial cell mechanics does not account for the network of F-actin that permeates the cytoplasm. This network, the distributed cytoplasmic structural actin (DCSA), extends from apical to basal ...

    • Thermal boundary layer development in dispersed flow film boiling 

      Hull, Lawrence M.; Rohsenow, Warren M. (Cambridge, Mass. : Heat Transfer Laboratory, Dept. of Mechanical Engineering, Massachusetts Istitute of Technology, [1982], 1982)
      Dispersed flow film boiling consists of a dispersion of droplets which are carried over a very hot surface by their vapor. This process occurs in cryogenic equipment and wet steam turbines. It is also of interest in the ...