CIVL2103_ch4 - Kinematics Quiz

<p>The changing rate of properties in a control volume. (B)</p> Signup and view all the answers

<p>They are imaginary lines that connect points of fluid motion recorded over time. (D)</p> Signup and view all the answers

<p>Velocity is only a function of position. (A), Flow properties do not change with time. (D)</p> Signup and view all the answers

<p>Unsteady flow (A)</p> Signup and view all the answers

<p>Periodic, non-periodic, and random (A)</p> Signup and view all the answers

<p>Curves that are tangent to the velocity vector at every point. (A)</p> Signup and view all the answers

<p>Streakline (D)</p> Signup and view all the answers

<p>One-dimensional flow (A), Two-dimensional flow (D)</p> Signup and view all the answers

<p>It utilizes particles like smoke or dyes to represent fluid movement. (D)</p> Signup and view all the answers

<p>Have the same pattern. (B)</p> Signup and view all the answers

<p>0.2% (B)</p> Signup and view all the answers

<p>The velocities of different fluid particles passing that point (B)</p> Signup and view all the answers

<p>a = dU/dt = (du/dt) + (dv/dt) + (dw/dt) (C)</p> Signup and view all the answers

<p>Both local and convective acceleration (C)</p> Signup and view all the answers

<p>Chain rule (C)</p> Signup and view all the answers

<p>Mass inflow equals mass outflow. (D)</p> Signup and view all the answers

<p>$\rho_1A_1v_1 = \rho_2A_2v_2$ (A)</p> Signup and view all the answers

<p>$B_m = \int a \rho (U \cdot n) dA$ (D)</p> Signup and view all the answers

<p>A region of space surrounded by a control surface. (D)</p> Signup and view all the answers

<p>The use of conservation laws to analyze material volume changes. (A)</p> Signup and view all the answers

<p>Mass remains constant. (B)</p> Signup and view all the answers

<p>Temperature of the fluid (D)</p> Signup and view all the answers

<p>It equals the sum of external forces acting on the mass. (B)</p> Signup and view all the answers

<p>The rate of change of an extensive property (B)</p> Signup and view all the answers

<p>It becomes zero. (B)</p> Signup and view all the answers

<p>The fluxes through the control surface (C)</p> Signup and view all the answers

<p>The energy of the system (B)</p> Signup and view all the answers

<p>The specific energy (A)</p> Signup and view all the answers

<p>It relates changes in B to fluid flow across boundaries. (C)</p> Signup and view all the answers

<p>$\frac{dB_{sys}}{dt} = \int_C^{V} \beta \rho dV + \int_C^{S} \beta \rho (U \cdot n) dA$ (A)</p> Signup and view all the answers

<p>By applying the control-volume equation using energy as the property (B)</p> Signup and view all the answers

<p>The volume of fluid passing through a flow area per time (A)</p> Signup and view all the answers

<p>It increases proportionally (B)</p> Signup and view all the answers

<p>ṁ = ρAU (D)</p> Signup and view all the answers

<p>Q is calculated using the net's inclined area (D)</p> Signup and view all the answers

<p>Through surface integration of the velocity across the flow area (A)</p> Signup and view all the answers

<p>0.012 m³/s (B)</p> Signup and view all the answers

<p>To quantify the amount of fluid flowing per unit time (C)</p> Signup and view all the answers

<p>Fluid density must be consistent (B)</p> Signup and view all the answers

Describes fluid flow by tracking individual fluid particles over time, specifying their properties based on initial location and time.

Describes fluid flow by observing properties at fixed points in space and time, recording velocities, densities, etc. as functions of location and time.

Study of fluid flow motion without considering forces and moments.

Study of fluid flow motion, considering the forces and moments.

The rate at which mass or volume of fluid passes a given point.

Velocity as a function of space and time in fluid flow (Eulerian view).

Fluid flow where properties (velocity, temperature, etc.) don't change with time.

Fluid flow where properties change with time.

Fluid flow where velocity or other properties alter across all three spatial directions.

Fluid flow where velocity doesn't change along certain spatial dimensions.

Using techniques like tracers and dye to observe and understand fluid flow patterns.

Lines that are tangent to the velocity vector, showing the direction of flow.

In steady flow, properties do not change with time; in unsteady flow, they do.

The volume of fluid passing through a specific area per unit of time.

The mass of fluid flowing through a specific area per unit of time.

Fluid velocity is the same everywhere across the flow area.

Q = A * U, where A is the flow area and U is the uniform velocity.

ṁ = ρ * A * U, where ρ is the fluid density.

The cross-sectional area through which the fluid flows.

Used to calculate flow when velocities are not uniform across the area.

Another term for volumetric flow rate.

The principle that in a flow section bounded by solid surfaces, the mass flow rate entering the section must equal the mass flow rate leaving the section.

The rate at which a specific substance, like sediment or energy, is transported by a fluid flow.

The amount of a specific substance being transported by fluid flow through a given area per unit time.

A region of space in which fluid properties are analyzed, typically used to study the flow through a device.

The boundary of the control volume, representing the area through which fluid enters or exits.

The principle that the total mass within a system remains constant over time.

The principle that the rate of change of momentum of a system equals the sum of external forces acting on it.

The principle that the rate of change of energy within a system is equal to the sum of work and heat transfer.

The rate of change of velocity of a fluid particle at a given point in space and time. It's more complex than just the derivative of velocity because fluid particles are constantly moving.

The rate of change of velocity at a fixed point in space due to changes in the velocity field over time. Like a wave increasing in height over time at a location.

The rate of change of velocity at a point due to the fluid particle moving from one velocity field to another. Like a boat moving from a calm river to a faster current.

The sum of local acceleration and convective acceleration, representing the overall change in velocity of a fluid particle.

The rate at which an extensive property (like mass or energy) of a system changes over time. It's calculated by taking the limit of the change in the property over a very small time interval.

A fundamental theorem that links the rate of change of an extensive property of a system to the fluxes of that property across the system's boundaries. It's used to analyze the transport of mass, energy, and momentum in fluid systems.

The rate at which a property (like mass, energy, or momentum) flows across a given area or surface.

A way to simplify the calculation of fluxes by assuming that the property being transported is uniform across the control surface.

The rate at which the total energy of a system changes. Includes changes in kinetic energy, potential energy, and internal energy.