Convergence characteristics of nonlinear vortex-lattice methods for configuration aerodynamics

Nonlinear panel methods have no proof for the existence and uniqueness of their solutions. The convergence characteristics of an iterative, nonlinear vortex-lattice method are, therefore, carefully investigated. The effects of several parameters, including (1) the surface-paneling method, (2) an integration method of the trajectories of the wake vortices, (3) vortex-grid refinement, and (4) the initial conditions for the first iteration on the computed aerodynamic coefficients and on the flow-field details are presented. The convergence of the iterative-solution procedure is usually rapid. The solution converges with grid refinement to a constant value, but the final value is not unique and varies with the wing surface-paneling and wake-discretization methods within some range in the vicinity of the experimental result

The ‘caged torch procession’: Celebrities, protesters and the 2008 Olympic torch relay in London, Paris and San Francisco

Along with the opening and closing ceremonies, one of the major non-sports events associated with the modern Olympic Games is the torch relay. Although initiated in 1936, the relay has been subject to relatively little academic scrutiny. The events of April 2008 however will have cast a long shadow on the practice. This essay focuses primarily on one week (6–13 April) in the press coverage of the 2008 torch relay as the flame made its way from London to Paris in Europe and then to San Francisco in the USA. It discusses the interpretations offered in the mediated coverage about the relay, the Olympic movement, the host city and the locations where the relay was taking place, and critically analyses the role of agencies, both for and against the Olympics, that framed the ensuing debate

China in 2010: A Baker’s Dozen of Links

Last month, many commentators offered up lists of top books and top news stories of 2010, sometimes focusing on a particular place or topic. It would be easy to follow suit here, in my first 2011 blog post about China. After all, there were plenty of books on the country published last year (some of which I reviewed individually or in groups). There were also plenty of China-related headlines, from those twelve months ago detailing rising tensions between Washington and Beijing, to summer ones reporting that the nation had surpassed Japan to become both the world’s number two economy, to early fall stories of Shanghai’s World Expo becoming the most-visited World’s Fair in history, to late fall commentaries on an empty chair at the Nobel Peace Prize ceremony

A Tale of Three Mega-Events

What can we learn, about either the People’s Republic of China or India and about what makes the two countries similar to and different from one another, by placing recent mega-events in these two young nation-states side by side? As a China specialist who watched the Beijing Olympics from afar with great interest in 2008, spent a month in Shanghai last summer while it played host to the 2010 World Expo, and is now nearing the end of his first stay in India, which took place in an autumn week that began right after the Commonwealth Games had concluded, I’ve been ruminating on this question a lot lately. Here are several things that strike me as worth considering, after a week in Delhi that has included participation in an academic workshop and public events devoted to themes of urban change.* In some cases, my comments bring up issues that have received a lot of attention in mainstream media coverage of the mega-events; in other instances, I push in directions that the press has not tended to go. In all cases, I am drawing upon not just my own reflections, but also on private and public conversations I have had during my brief time in Delhi, especially discussion at a stimulating October 19 Delhi Urban Platform event, which was held at the Center for the Study of Developing Societies (CSDS) and gave me the opportunity to share a stage with Ravi Sundarum (an urban theorist and media studies scholars who is one of the initiators of the inspiring SARAI network) and former CSDS director Ashis Nandy (the globally famous and provocative political thinker)

Chicago and the Future of U.S.-China Summits

Except in the Windy City itself, where Hu Jintao heads today and will spend tomorrow, the reporting and speculative commentary on the Chinese leader’s second visit to the United States has tended to focus on it’s just-concluding Washington leg. To me, though, the stop in Chicago seemed from the start the most potentially interesting and novel part of Hu’s trip. After all, this is the first time that a visit to Chicago, an economically important crossroads city with a colorful history and famous architectural landmarks, has figured in the itinerary of the head of China’s Communist Party

Asia’s Disappearing Daughters

Last week witnessed the publication of Mara Hvistendahl’s Unnatural Selection: Choosing Boys Over Girls, and the Consequences of a World Full of Men (Public Affairs, 2011), and over the weekend my take on the book appeared online at the recently relaunched Asian Review of Books. That review is reposted here with the kind permission of the ARB, almost exactly as it ran there. Those who are interested in learning more about Hvistendahl’s arguments after reading my essay can, of course, buy the book, but U.S.-based followers of the blog have another option as well: catch one of the public events (including a June 28 L.A. stop) on this list

Q&A: Robert Bickers, Author of The Scramble for China

Several months ago, I was lucky enough to get my hands on an advance copy of The Scramble for China: Foreign Devils in the Qing Empire, 1832-1914, Robert Bickers’ fascinating new book. Published in the United Kingdom and most other parts of the world in February, this work will be released in the United States later this month. In anticipation, I caught up with Robert (an old friend and sometime co-author of mine, as well as a past contributor to China Beat) and asked him some questions about the book. A stylishly written and carefully researched work, it contains everything from lively accounts of battles to insightful ruminations on the very different ways some pivotal events and incidents (e.g., the looting of artifacts from Beijing palaces) are remembered inside and outside of China. It also includes an illuminating discussion of the origins and spread of the treaty-port system. This makes it fitting that he sent his answers to the questions I emailed him (I only caught up with him virtually, as he was across the Pacific from me during our interview) while gazing out at the Huangpu River, the most important waterway in Shanghai, the most celebrated and notorious of China’s onetime treaty ports

Humiliation and Normalization: A Tale of Two New China Books

Henry Kissinger and Robert Bickers don’t have much in common. One is a U.S.-based octogenarian; the other a U.K.-based scholar roughly half as old. Only one, Kissinger, has been characterized by Christopher Hitchens (among others) as a perpetrator of war crimes. And only one, ironically Kissinger again, has won a Nobel Peace Prize. Kissinger spent some time as a professor, but then went on to work as a diplomat and business consultant. Bickers, however, while writing about diplomats and entrepreneurs (along with policemen and other kinds of people), has made his career solely within the academy. This list could be expanded almost indefinitely. And yet, I’ve been thinking a lot lately about something that links Kissinger (whom I’ve never met) to Bickers (an old friend). Namely, their most recent books, Kissinger’s On China and Bickers’ The Scramble for China: Foreign Devils in the Qing Empire, 1832-1914, have some interesting shared traits