What is Flow: Definition and 1000 Discussions

Flow (stylized as flOw) is an independent video game created by Jenova Chen and Nicholas Clark. Originally released as a free Flash game in 2006 to accompany Chen's master's thesis, it was reworked into a 2007 PlayStation 3 game by his development studio, Thatgamecompany. SuperVillain Studios developed a PlayStation Portable version of the game in 2008, and PlayStation 4 and PlayStation Vita versions in 2013. In Flow, the player navigates a series of two-dimensional (2D) planes with an aquatic microorganism that evolves by consuming other microorganisms. The game's design is based on Chen's research into dynamic difficulty adjustment at the University of Southern California's Interactive Media Division, and on psychologist Mihaly Csikszentmihalyi's theoretical concept of mental immersion or flow.
The Flash version of Flow received 100,000 downloads within its first two weeks of release, and had been played over 3.5 million times by 2008. Its PlayStation 3 re-release was the most downloaded game on the PlayStation Network in 2007 and won the Best Downloadable Game award at the 2008 Game Developers Choice Awards. It was nominated for awards by the Academy of Interactive Arts & Sciences and the British Academy of Film and Television Arts (BAFTA). Reviewers praised Flow's visual and audio appeal, but noted the simplicity of its gameplay; several considered it to be more of an art piece than a game.

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  1. F

    Momentum equation and open channel flow

    Homework Statement Determine y2 (ft)and v2 (ft/s) using the momentum principle assume widths are the same at 1 and 2 Homework Equations from what i remember in my past fluids class, the momentum equation is: Force = Qvout - Qvin assuming same density and direction However in my lecture the...
  2. Steven Bolgiano

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    Using as an example a 12v pump typical of aquarium, to regulate flow is better to use a potentiometer or a closing valve to affect a rate of flow?
  3. bob012345

    How much air flow is required for lifting a wing?

    Given a wing that lifts a plane moving through it at velocity V, how do I figure the minimum volume of air flow necessary to lift the same wing if the plane is still and the air is blown over it? Would moving that volume of air over the wing artificially require more power than what is required...
  4. J

    Fractional Flow Reserve and the physics behind it

    Have been referring to this forum a lot and I think I finally understand it. However I couldn't find a discussion specific to applying the Laws of Ohm, Poiseuille and Bernoulli's to why we use a pressure wire to study coronary blood flow through a lesion site in the coronary artery. So I made...
  5. S

    A Is the Pressure in Paradoxical Euler Flow Fictitious?

    Consider the following flow: x = (1+ct)x0. Let the density rho(t) = rho0/(1+ct) so that the flow conserves mass. Physically, this is just a bunch of fluid elements on the positive x0-axis each given initial velocities that are proportional to their initial positions. Each fluid element should...
  6. P

    Deriving the Equation for Average Water Mass Flow Rate in Water Rocket Launches

    Hey, I'm a student who has to complete a written assignment for physics. I chose to launch water rockets and investigate the effect of volume on the range. I am trying to also come up with a mathematical model however I am struggling to understand an equation I found the following equation to...
  7. B

    How to calculate the speed of a cross flow water turbine?

    How to calculate the speed of cross flow water turbine? Help, I'm struggling on our machine design.
  8. J

    Unsteady flow of water being discharged from a tank

    I am currently modeling the altitude that a water rocket can attain. In order to do this i am first modeling the the thrust phase. Due to the water mass decreasing with time (the same goes for the pressure - it decreases over time as the water is expelled out of the nozzle). This is an...
  9. JME23

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    Hi, Could someone please help me in understanding how the air is thrust rearward by a propeller? I am specifically interested in how an axial-flow compressor, which uses aerofoil shaped blades to force the air through the engine does so, however I feel a good start is a propeller. It makes...
  10. S

    B Assumption of the conservation of energy to Heat Flow

    Recently looked at why temperature flows from high Temperatures to Low temperatures.Essentially it was laid on two Fundamental Assumptions: 1.Energy is conserved in the isolated system 2.Entropy in isolated non quasi static systems will always tend to increase. Lets take a brief look at...
  11. G

    Laminar flow in a tube, heat transfer coefficient-sanity check

    Hi there, Hopefully this is a very easy question and you all can just confirm this for me. When calculating heat transfer into a fluid from a heated tube, is it correct to say that the heat transfer coefficient is *not* dependent on the tube diameter? So, if we solve for T_{out}, we get...
  12. F

    Flow of charge between two spheres

    Lets say I have two spheres of equal dimensions, one charged and one uncharged. Now I connect them with a conducting wire. They will now very quickly reach equal potential. Can it be said that the total charge on each sphere remains almost unchanged?
  13. J

    What is the solution to the circular duct problem?

    Homework Statement Shown in the figure attached. Circular duct with a diameter of 150 mm, strikes a cup and exits through a circumferential slot to the atmosphere. Mean velocity in the duct = 100 ms^-1 Air density = 1.1 kg/m^3 Dynamic viscosity of air = 19.05 x 10^-6 kgm^-1s^-1 (a) Determine...
  14. K

    B LC Oscillation: Current Flow & Charge Polarity

    when in LC oscillation current flow from inductance to capacitor and charge is opposite polarity. why don't current flow in reverse of it and charging the capacitor in same manner as it was earlier.
  15. Sebastiaan

    I Calculating Robert Zubrin's Dipole Drive Mass Flow

    I'm trying to understand calculation made Robert Zubrin in his presentation on Dipole Drive source: In here he made the following statement "A Coulomb of protons has a mass of 0.011 milligrams. If the jet power is 400 W, and the potential difference is 64 V, so the proton current will be...
  16. M

    Pressure drop necessary to have desired gas flow rate

    Hello, I'm a chemist and I'm currently working on my PhD on materials science. I'm trying to determine the pressure difference necessary to achieve the desired gas flow inside a chamber. The scheme of the chamber is the following: I have a big chamber which is evacuated to 0.2 bar, and another...
  17. M

    What is the difference between nozzle (or a ventury) and flow control valve?

    In both the cases, the flow cross section area of the pipe is reduced.But in case of nozzles the velocity increases,pressure reduces and the flow rate is maintained.But in case of flow control valve, flow rate changes.(Assuming the fluid to be incompressible) Why is there a difference between...
  18. Roy S Ramirez

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    Hello everybody, I hope you are doing fine. I'm currently designing an injector for a hydrogen peroxide - ethanol engine, and the following formula is confusing me: Q = Cd * A * sqrt( 2 * dP / rho); where Cd is the discharge coefficient, A the total area, dP the pressure drop, and rho the...
  19. Roy S Ramirez

    Relationship between volumetric flow rate and pressure

    Hello everybody, This is my first post. I've been working on a liquid rocket engine for a while, but I have never gotten to work on its feed system (fluid mechanics), until recently. We are using a very simple pressure fed system, and its main goal is to deliver the propellants at a specific...
  20. U

    Compressible flow or incompressible flow equation?

    Hello everyone.. I am using 2-dimension Navier Stokes equation, but I confused that my problem is compressible or incompressible flow form, because if I have initial pressure and temperature and velocity for x-axis only in one grid that they are so very high but the others grid are zero. Can I...
  21. J

    Heat Flow Rate: Dependence on Conductivity & Temp Diff

    I recently read in a Khan Academy article that the rate of energy exchange through heat across a material of thickness ##d##, surface area ##A##, and thermal conductivity ##k## can be approximated by $$\dot{Q} = \frac{kA\Delta T}{d}$$ where ##\dot{Q}## is the heat rate and ##\Delta T## the...
  22. V

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    Hi. Just looking for an average answer to a practical scenario. At work we use a liquid O2 cylinder which includes an outer jacket that houses a regulated gas pressure of 24 bar. I need to calculate the flow rate in l/min when the supply tap (15mm diameter) is open fully? This is essentially...
  23. M

    Kinetic Energy vs Flow Work: Exploring the Difference

    As per work energy principle, the energy spent in moving an object is stored as kinetic energy.Flow work is done to make the fluid move.Why is it not included in kinetic energy (i.e) why kinetic energy and flow work are considered seperately?
  24. JTC

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    Could someone please go here... https://en.wikipedia.org/wiki/Flow_separation And explain to me the difference between Flow and Boundary Separation discussed in the opening. Because this explanation makes no sense to me. I have the problem. I just don't understand the difference.
  25. A

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    Is it true that the laminar to turbulent flow transition has been finally solved? From what I've read, it seems to be well described by the Directed Percolation Model. I can hardly believe it since I haven't seen the news in the press (from my point of view, it's a long standing unsolved issue...
  26. Perodamh

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  27. M

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  28. D

    How does corrective treatment of lymphedema help lymph flow?

    Homework Statement Produce an detailed understandsing of the anatomy and function of the lymphatic system, using correct scientific terminology to explain the rationale for use of corrective treatment for lymphedema. Homework Equations N/A The Attempt at a Solution Lymphatic edema is the...
  29. B

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  30. Z

    Flow rate calculation of hydrogen gas in case of leak

    Hi. I'm a mechanical engineer, but working as Safety Engineer. I have a question how to calculate the flow rate of hydrogen gas before a flow controller in case of leak through a 4.5 mm line at 35 bar pressure. Thanks in advance.
  31. A

    I How Does a Pressurized Tank Empty Over Time Through a Hole?

    I having difficulty wrapping my head around a concept that I wish to solve. I have a 10L tank of compressed air at 100psi. When an outlet hole of cross-sectional area of 0.115 in^2 is opened, I wish to develop a curve of pressure vs. time from t=0 until pressure drops to atmospheric. Many things...
  32. N

    Will the liquid flow split evenly at a T-junction?

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  33. Gabriele99

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  34. cosmik debris

    Why does a resistive wire heat up from current flow?

    The kinetic energy of electrons in a conductor is roughly 9 orders of magnitude greater than the kinetic energy from the drift velocity of the electrons. It seems that the kinetic energy from the drift velocity is not enough to account for the heating, where does the heat energy come from? Cheers
  35. K

    Flow inside pipe, heat transfer

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  36. K

    Does Cavitation Affect Volumetric Flow Rate Conservation in a Pipe?

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  37. R

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  38. K

    Calculating Velocity of Water Flow in Open Channel

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  39. S

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  40. S

    Plumbing How can I make a 1-10 liter/hr flow meter?

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  41. Killavolt

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    Hello all, I've come in search of some information, and hopefully if possible a little bit of help. On searching the web for various ways to improve my truck in general I came across this very interesting mod that I've never once heard of in my entire life, "The Gadgetman Groove", which is a...
  42. P

    Finite difference conjugate heat xfer: internal flow

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  43. A

    A Muller's 'Now and the Flow of Time' - what's up?

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  44. A

    Effects of Temperature on Flow Rate

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  45. B

    Why Does Closing My Door Increase the Breeze in My Room?

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  46. jamalkoiyess

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  47. B

    In which direction does the current flow?

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  48. K

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  49. J

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  50. W

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