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  1. Thermo - Simple Energy balance equation - Physics Forums

    Apr 9, 2015 · The discussion revolves around the General Energy balance equation in thermodynamics, specifically focusing on its application in both closed and open systems. Participants explore different …

  2. Understanding Heat Equation in Equilibrium and Energy Balance

    Oct 6, 2014 · The discussion revolves around the heat equation in equilibrium, specifically analyzing the implications of boundary conditions, energy balance, and heat flux. Participants explore the …

  3. Thermodynamics Energy balance Equation - Physics Forums

    Mar 11, 2011 · The discussion revolves around the energy balance equation in thermodynamics, specifically focusing on the term "j" within the equation. Participants explore its meaning, units, and …

  4. Transient state energy balance -- Variable volume system

    May 12, 2015 · The discussion revolves around the energy balance for a variable volume system, specifically focusing on a tank storing a liquid with a moving boundary. Participants explore the …

  5. Mass and energy balance equations for a tank filled with H20

    Jul 1, 2018 · The discussion revolves around formulating mass and energy balance equations for a tank filled with water, particularly focusing on how these equations change when the flow rates are not …

  6. Demystifying the Often Misunderstood Bernoulli’s Equation

    Dec 3, 2018 · The goal of this post is to present Bernoulli's equation, its derivation based on energy conservation, and interpretations based on both momentum and energy conservation, and its …

  7. The principle behind throttling valves • Physics Forums

    Mar 18, 2005 · The Bernoulli equation is based on the differential force balance equation for an ideal fluid, one which has no viscosity. The Navier Stokes equations include the viscous stresses that are …

  8. Thermodynamics Energy Balance: Solving for Work Input in an …

    Jul 26, 2017 · The original poster (OP) calculates the work input as -206 kJ using the isothermal PV equation but expresses confusion regarding the implications of this result in the context of the first …

  9. Transient Energy Balance for Heating a Tank of Water

    Oct 8, 2017 · The transient energy balance equation was proposed as power in = Time derivative of the internal energy change + convective heat loss. One participant suggested modifying the energy …

  10. Non-dimensionalization of the energy balance - Physics Forums

    Jul 24, 2015 · The discussion revolves around the non-dimensionalization of an energy balance for a tank system, as presented in a problem from Himmelblau's Basic Principles and Calculations in …