Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Civil Engineering Expert

Section A: True (T) or False (F)?

1) In deep water, the wave speed is dependent on the wave period and the water depth.
 
2) At a point underneath a wave trough, the velocity vector points in the direction of wave propagation.
 
3) A wave spectrum is a plot of wave energy versus time.
 
4) The barometric setdown associated with a stationary high pressure system is of the order 10cm/hPa.
 
5) Refraction is the process by which wave energy spreads out along a wave crest from a region of high energy to a region of low energy usually associated with obstructions in the ocean.
 
6) Assuming a spherical shaped sediment particle will tend to overestimate the settling velocity for natural sand particles.
 
7) Tsunami waves in the ocean behave as deep water waves.
 
8) Considering linear wave forcing, the maximum inertial force acting on a pile will coincide with the passing of the wave crest.
 
9) Given the same free stream velocities, the bed shear stress resulting from wave driven currents is greater than the bed shear stress under a steady, uni-directional current.
 
10) Wave runup is more dependent on the wave period than the wave height.

Section B: Multiple choice

1) A small-amplitude wave with a period of 11s propagating in a water depth of 2m is a:

(a)  transitional wave
(b)  shallow water wave
(c)  deep water wave
(d)  short wave
 
2) Consider a 10m wind speed of 20.65m/s blowing across a deep water ocean. Assuming that wind duration is not a limiting factor,  the minimum fetch length required to reach a fully developed sea state is approximately:

(a)  900km
(b)  1000km
(c)  1100km
(d)  1200km
 
3) Irregular waves with a period of 12 seconds and Ho,rms = 2.1m runup on a beach with a slope of 1 in 100. How many waves will exceed the R2% elevation in a 2hr period?

(a)  8
(b)  12
(c)  16
(d)  20
 
4) Consider the head of a rubble mound breakwater made of rough angular  quarry stone (ρs = 2650kg/m3) with a slope of 1:2. What is the largest broken wave height that a 1m armour unit could withstand?

(a)  2.3m
(b)  2.5m
(c)  2.8m
(d)  3.2m
 
5) A bottom mounted pressure sensor is deployed in a water depth of 5m where waves typically have a height of 1m and a period of 9.8s. Relative to the pressure fluctuations at the still water level, how much will the pressure fluctuations at the sensor will be reduced by?

(a)  5%
(b)  10%
(c)  15%
(d)  20%

Section C:

1) Aerial photographs of a 10km section of straight coastline oriented in the north-south direction with the ocean to the east  reveal a shoreline accretion rate of 1.2m/year. Assuming that wave breaking occurs in shallow water with a breaker index of 0.8 and that the bottom contours are straight and parallel to the coastline, estimate the average annual shore-normal transport rate. 

First table below summarizes the results of an analysis of deep water wave data quantifying the typical conditions for the area. And second table summarises the sediment and profile data.

H = wave height, T = wave period, θ = wave crest angle to coastline.

1789_aerial photographs.jpg

2) describe wave set-up and set-down in the nearshore in terms of wave transformation processes and the resultant spatial gradients in the radiation stress.

3) Consider the breakwater configuration shown in the figure below. The incident wave conditions at the breakwater are a wave height of 1.5m, wave period of 7.0s and a wave crest angle to the breakwater of 15o. The water depth in behind the breakwater is constant at h = 4.9m. Provide quantitative evidence to establish whether 0.2mm quartz sediments (ρs = 2650kg/m3, s ≈ 2.65) at location B will move or not.

1034_wave height.jpg

Civil Engineering, Engineering

  • Category:- Civil Engineering
  • Reference No.:- M91391

Have any Question? 


Related Questions in Civil Engineering

The streetlight a is attached to the end of the horizontal

The streetlight A is attached to the end of the horizontal boom ABO. The light, which weighs 100 N, is subjected to a wind load of 20 N acting in the negative y-direction. The forces P and Q represent the tensions in the ...

If the uncertainties in temperature and pressure for prob

If the uncertainties in temperature and pressure for Prob. 7.49 are ±1.5?F and ±2 kPa, respectively, what is the uncertainty of the billing if the actual volume flow measurement is exact? Prob. 7.49 A positive-displaceme ...

Ben bitdiddle is exploring finite-state machines of the

Ben Bitdiddle is exploring finite-state machines of the following form: A. Draw a state-transition diagram for the FS . Assume that you start in the state Q 0 = 0, output = 1. B. Assume that you start in the state Q 0 = ...

Recall the function that is displayed in figure 84 on page

Recall the function that is displayed in Figure 8.4, on page 8-9. We know that this function has two strong minima. Find the secondorder Taylor series expansions for this function about the two minima.

Step response of an rlc bandpass circuit the step response

Step Response of an RLC Bandpass Circuit The step response of a series RLC bandpass circuit is (a) Find the passband center frequency and the two cutoff frequencies. (b) Design a circuit that would possess the above step ...

Consider the following state-transition diagramfor each of

Consider the following state-transition diagram: For each of the following questions, assume that the machine starts in state A. A. Give the sequence of states visited, and the sequence of outputs produced, if a machine ...

Ben bitdiddle is exploring finite-state machines of the

Ben Bitdiddle is exploring finite-state machines of the following form: A. Draw a state-transition diagram for the FS . Assume that you start in the state Q 0 = 0, output = 1. B. Assume that you start in the state Q 0 = ...

The tongs shown are designed for lifting blocks of ice if

The tongs shown are designed for lifting blocks of ice. If the weight of the ice block is W, find the horizontal force between the tongs and the ice block at C and D.

The pressure drop through an oil pipeline is to be modeled

The pressure drop through an oil pipeline is to be modeled by using the flow of water through an identical length of tubing. The required oil velocity in the prototype pipeline is known to be 35 cm/s. In order for the ex ...

Write data analysis methods of aac autoclaved aerated

Write Data analysis methods of AAC (Autoclaved aerated concrete) in Oman. Attachment:- sample.rar

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen