Fluid mechanics
===============

Fluid mechanics is the branch of physics concerned with the mechanics of fluids
(liquids, gases, and plasmas) and the forces on them.

.. _ideal_fluid_def:

**Ideal fluid**

An ideal fluid is a model of fluids often used in fluid mechanics to approximate
the behavior of real fluids. Ideal fluids are:

#. non-viscous, i.e. there is no internal resistance to flow;
#. in steady, or laminar, flow;
#. incompressible;
#. irrotational, i.e. its particles undergo no rotation around their center of mass.

.. py:currentmodule:: symplyphysics.laws.hydro

**Contents:**

.. toctree::
    :maxdepth: 4


    laws.hydro.dynamic_pressure_via_density_and_flow_speed
    laws.hydro.efficiency_of_the_hydraulic_press_from_force_and_height
    laws.hydro.efflux_speed_via_height
    laws.hydro.efflux_speed_via_hydrostatic_pressure_and_density
    laws.hydro.excessive_pressure_under_curved_surface_of_bubble
    laws.hydro.froude_number
    laws.hydro.hagen_poiseuille_equation
    laws.hydro.hydraulic_stress_is_bulk_modulus_times_strain
    laws.hydro.hydrostatic_pressure_from_density_and_depth_acceleration
    laws.hydro.hydrostatic_pressure_via_density_and_height
    laws.hydro.inner_pressure_is_constant
    laws.hydro.inner_pressure_is_sum_of_pressures
    laws.hydro.input_force_to_area_ratio_equals_to_output
    laws.hydro.jurin_equation
    laws.hydro.mach_number_is_flow_speed_over_speed_of_sound
    laws.hydro.nusselt_number
    laws.hydro.pressure_of_liquid_in_vessel_moving_horizontally
    laws.hydro.pressure_of_liquid_in_vessel_moving_vertically
    laws.hydro.reynolds_number_formula
    laws.hydro.shear_stress_is_proportional_to_speed_gradient
    laws.hydro.submerged_volume_of_floating_body_via_density_ratio
    laws.hydro.surface_tension_force_via_surface_tension_and_length
    laws.hydro.volume_flux_is_constant
    laws.hydro.weight_in_fluid_via_ratio_of_densities