Volume 6, Issue 1

 

ارسال های اخیر

  • Heat Transfer and Carryover in the Dryout of a Heated Vertical Tube 

    Heydari, A. (Materials and Energy Research Center, 1993-02-01)
    This work concerns dryout experiments in which a tube, initially containing water, filled up or partially filled and at 1,2 or 3 atmosphere pressures, is heated. The initial water column experience three thermal regions. ...

  • Stochastic Synthesis of Drouths for Reservoir Storage Design (RESEARCH NOTE). 

    Soltani, A. R.؛ Raeissi, E.؛ Samani, N. (Materials and Energy Research Center, 1993-02-01)
    Time series techniques are applied to Ghara-Aghaj flow records, in order to generate forecast values of the mean monthly river flows. The study of data and its correlogram shows the effect of seasonality and provide no ...

  • Second Moment of Queue Size with Stationary Arrival Processes and Arbitrary Queue Discipline 

    Haji, Rasoul (Materials and Energy Research Center, 1993-02-01)
    In this paper we consider a queuing system in which the service times of customers are independent and identically distributed random variables, the arrival process is stationary and has the property of orderliness, and ...

  • Nonresonant Excitation of the Forced Duffing Equation 

    Geer, J. F. (Materials and Energy Research Center, 1993-02-01)
    We investigate the hard nonresonant excitation of the forced Duffing equation with a positive damping parameter E. Using the symbolic manipulation system MACSYMA, a computer algebra system. we derive the two term perturbation ...

  • A Non-Sinusoidal Reference Wave for Pwm Ac Drives 

    Seifi, A.؛ Hosseini, S. H. (Materials and Energy Research Center, 1993-02-01)
    In this paper we propose a suitable reference wave for Pulse Width Modulation (PWM) AC Drives. Staircase reference waves whose levels are calculated to eliminate certain harmonics are studied and a certain staircase reference ...

  • Mechanism and Prevention of Scale Formation in Boilers 

    MulIer-Steinhagen, H. (Materials and Energy Research Center, 1993-02-01)
    Nucleate boiling heat transfer coefficients may be strongly reduced by scale formation, even for conditions where the bulk foulant concentration is well below the saturation concentration. Due to the mechanism of micro-layer ...

  • Application of a One-Dimensional Computer Model to Flood Routing in Narrow Rivers 

    Tomlison, K.W.؛ Nassehi, V. (Materials and Energy Research Center, 1993-02-01)
    This paper deals with the development of a computer model for flood routing in narrow rivers. Equations describing the propagation of a flood wave in a channel-flood plain system are presented and solved using an implicit ...