# Physical Principles in RT Part 4.txt

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1. Look up page 109 in Rays text book and page 108. all on henry's law
2. The Law that states: the volume of a gas varies inversely with its pressure.
Boyle's Law
3. The formula for Boyle's Law
PV(1)=PV(2)
4. The Law that states the volume of a gas varies directly with changes in temp.
Charles' Law
5. The formula for Charles' Law
V/T(1)=V/T(2)
6. The Law that sates: the pressure exertd by a gas varies directly with its absolute temp.
Gay-Lussac's Law
7. Gay-Lussac's formula
P/T(1)=P/T(2)
8. What is the formula for the universal gas Law?
PV/T(1)=PV/T(2)
9. What does STP mean?
0C and 760mmHg
10. Body temp BT means?
37C
11. Ambient temp. (AT) or pressure (AP) means?
The existing environmental temp. or pressure.( opp. of STP)
12. Saturated gas (S) means?
a volume of gas with a relative humidity of 100% at any given temp.
13. Dry gas (D) means?
a volume of gas w/ no vapor in it.
14. STPD means?
a volume of dry gas at temp. of 0C and Pressure 760mmHg
15. BTPS means?
a volume of gas saturated w/ water vapor at 37C and ambient enviroment pressure.
16. ATPS means?
a volume of gas saturated with water vapor at ambient temp. (room temp.) and pressure.
17. When reporting: reporting gases in the lungs are recorded as?
BTPS
18. When reporting: gases that undergo chemical rxn in the body, such as blood gases, are recorded?
STPD
19. If saturated gas vol. are to be used in physiologic calc., they are fist________, then calc, back to______.
corcected to their dry volume, the saturated value.
20. Is the temp. above which the kinetic activity of its molecules is so great that the attactive forced cannot keep them in a liquid state. It is the highest temp. at which a substance can exist as a liquid.
Crtical temp. of a liquid.
21. Is the oressure neede to maintain equilibrium between the liquid and gas phases of a substance at this critical temp.
Critical pressure.
22. Is where you have critical temp. and critical pressure of a substance.
Critical point
23. A gas that has a critical temp. so low that at room temp. and press. it cannot exist as a liquid.
True Gas
24. is the gaseus state of a substance coexisting with its liqud or solid state at room temp. and pressure.
Vapor
25. is the bulk movement of a substance through space.
Flow
26. is the study of fluids in motion.
Hydrodynamics
27. The pressure exerted by a liquid in motion depends on the nature of _____ not just the depth and density of the fluid.
Flow itself
28. It states that in any mechanical process, there will always be a decrease in the total energy available to do work.
The Second Law of Thermodynaics
29. As fluid flows through a tube there will be a pressure drop along the way due to?
a cumulative energy loss
30. What is the forumla for total flow resistance?
R=(P1-P2)/V
31. In the flow resistance equations what does P1 stand for?
it is the pressure at the upstream point
32. In the flow resistance formula what does P2 stand for?
it is the pressure at the downstream point
33. In the flow resistance formula, what does V stand for?
It is the flow
34. Flow where a fluid moves in discrete cylindrical layers or streamlines.
laminar flow
35. Determines the pressure difference required to produce a given flow, under conditions of laminar flow through smooth tube of a fixed size.
Poiseuille's Law
36. Formula of for poiseuille's law. Determines press. diff. to prod. a flow.
DeltaP= 8nlv/pir^4
37. in poiseuille's formula delta P stands for?
38. in poiseulle's formula n stands for?
the viscosity of the fluid
39. in poiseulle's formula l stands for?
the tube length
40. in poiseulle's formula v stands for?
the fluid flow
41. in poiseulle's formula r stands for?
42. For fluids flowinf in a laminar pattern, the driving pressure will increase whenever the_________?
fluic viscosity, tube length, or flow increases.
43. Greater pressure will be required to maintain a given flow if the tube radius_____?
decreases
44. flow where ther fluid molecules form irregular eddy currents on a chaotic pattern.
Turbulent flow
45. Formula for reynolds number
Nr=vxdx2r/n
46. in reynolds number formula v stands for?
linear velocity
47. in reynolds number d stands for?
fluid density
48. In reynolds number r stand for?
49. in reynolds number n stands for?
viscosity
50. In a smooth-bore tube, laminar flow becomes turbulent when Nr exceeds______.
2000
51. These conditions favor what type of flow: increased fluid velocity, increased fluid density, increased tube radius, or decreased fluid viscosity?
turbulent flow
52. When flow is turbulent the press. diff across a tube is defined by what formula?
deltaP = flV^2/4pi^2r^5
53. deltaP = flV^2/4pi^2r^5 f stands for?
friction factor based on the fluid's density and viscosity and the tube wall roughness.
54. deltaP = flV^2/4pi^2r^5 l stands for?
the tube length
55. deltaP = flV^2/4pi^2r^5 v stands for?
the fluid flow
56. deltaP = flV^2/4pi^2r^5 r stands for?
57. To double flow under laminar conditions, you only need to double ____.
the dricing pressure
58. To double flow under turbulent conditions, you would have to?
increase the dricing pressure fourfold
59. is a mixture of laminar and turbulent flow.
transitional flow
60. flow in the respiratory tract is mianly____
transitional
61. when all else is equal, pressres generated during laminar flow are most effect by fluid viscosity, whereas fluid density is the key factor when?
flow is turbulent
62. the most common units for flow are?
L/min or L/sec
63. The most common unit for velocity are?
cm/sec
64. fluid velocity, at a constant flow, varies inversely with the cross-sectional area of the tube. This relationship is called?
Law of Continuity
65. what kind of effect is done when a fluid flows through a tube of uniform diameter, pressure drecreases prgressively over the tube lenght.
The Benoulli

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 Author: MagusB81 ID: 121344 Filename: Physical Principles in RT Part 4.txt Updated: 2011-12-06 23:08:42 Tags: RESP 130 Folders: Description: RESP 130 Show Answers:

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